Can The 911 GT3 S/C Be A Real GT3? — The Carmudgeon Show w/ Jason Cammisa & Derek Tam-Scott — Ep 234
The Carmudgeon Show
Can The 911 GT3 S/C Be A Real GT3? — The Carmudgeon Show w/ Jason Cammisa & Derek Tam-Scott — Ep 234 The Carmudgeon Show · Apr 20, 2026
Can The 911 GT3 S/C Be A Real GT3? — The Carmudgeon Show w/ Jason Cammisa & Derek Tam-Scott — Ep 234

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Can The 911 GT3 S/C Be A Real GT3? — The Carmudgeon Show w/ Jason Cammisa & Derek Tam-Scott — Ep 234
Volkswagen Cabrio
Car

Volkswagen Cabrio

This is a Volkswagen Cabrio—basically a convertible version of a Golf-era car. In this story, the car has been modified so it drives more like a sporty hatchback than a normal convertible.

Term

VR6 Swap

A “VR6 swap” means the car was modified to use a Volkswagen VR6 engine instead of whatever it came with. It’s a common enthusiast upgrade because the VR6 is powerful and fits well in many older VW engine bays.

Concept

roof chopped off

This phrase means the car was modified to remove the roof, turning it into a convertible. Cutting up a car like that can change how stiff it feels and how it handles compared to a normal car with a full roof.

Concept

hot hatch that is no longer hatchy

A hot hatch is a small car that’s made to be fun and quick. Here they’re joking that the car still has the sporty vibe, but it’s not a hatchback anymore because it’s been turned into a convertible.

Concept

emissions controls

Emissions controls are the systems that reduce pollutants from a car’s exhaust, such as catalytic converters, oxygen sensors, and related controls. The hosts are framing this as a major reason modern cars have complex diagnostics and “nightmare” troubleshooting.

Concept

OBD2

OBD-II (On-Board Diagnostics, second generation) is the standardized emissions and engine diagnostic system used on most cars from the mid-1990s onward. It’s designed to monitor emissions-related components and store trouble codes, but it can be frustrating because codes can be triggered by many causes and vary by vehicle.

Brand

Porsche

Porsche is a German brand famous for performance cars like the 911. The hosts are about to talk about a Porsche model idea—specifically a GT3 convertible.

Volkswagen Beetle
Car

Volkswagen Beetle

The Volkswagen Beetle is a small, classic car made by Volkswagen. It’s known for its simple design and distinctive shape. The podcast brings it up as a comparison point to other cars with “sports” styling or concepts.

Concept

convertible GT3

A “convertible GT3” is basically a GT3-style sports car but with the roof that can open. The big question is whether it can still feel as solid and track-capable as a normal GT3.

Term

monitors

“Monitors” are the car’s self-checks for emissions equipment. If the car hasn’t finished those self-checks yet, it can fail an emissions test or cause paperwork problems at the dealer.

Concept

OBD1

OBD1 is an older version of the car’s self-diagnostics. It wasn’t as standardized as OBD2, so it could be tougher to read and interpret problems.

Concept

smog check

A smog check is an emissions compliance test used to verify that a vehicle’s exhaust and emissions systems are functioning properly. The transcript contrasts older “sniffing” methods with modern diagnostics that can determine issues by reading onboard error information.

Term

emissions systems

“Emissions systems” refers to the hardware and controls that reduce pollutants—such as sensors, catalytic converters, and related control modules. OBD2 monitors these systems and flags faults that could cause the car to fail emissions testing.

Term

diagnostic port

The diagnostic port is where a scanner plugs into your car to talk to its computer. It lets a shop read error codes and figure out what’s going on.

Term

diagnostic tool

A diagnostic tool is a scanner that plugs into the car. It can read stored warning codes so you can figure out what system is causing the issue.

Term

evap

EVAP is the system that keeps fuel vapors from escaping into the air. It’s often the one that causes warning codes because a small leak or a faulty valve can set it off.

Concept

battery disconnected resets readiness/learned status

If you disconnect the battery, the car can forget what it has already checked. After that, you have to drive it so the computer can run its self-tests again.

Concept

drive cycle

A drive cycle is a set routine for how you start and drive the car so its computer can run emissions tests. The car needs certain temperatures and fuel levels before it will check everything. That’s why the instructions sound very exact.

Term

stone cold

“Stone cold” just means the car has been sitting long enough that the engine is basically at the outside temperature. Some tests only work correctly when the engine starts from that cold baseline. So the procedure starts with a cold start on purpose.

Term

coolant temperature

Coolant temperature is how hot the engine’s cooling liquid is. The car’s computer uses it to know whether the engine is cold or warm. Drive-cycle tests specify coolant temperature so the computer can run the checks under the right conditions.

Term

ambient air temperature

Ambient air temperature is just the outside temperature. It changes how the car behaves and how fast it warms up. So the test procedure tries to keep the conditions consistent by matching the engine behavior to the outside temperature.

Term

fuel level

Fuel level is how much gas is in the tank. The car’s computer uses fuel information as part of its emissions checks, so the test wants you to be in a certain range. That way the results are more consistent.

Term

throttle (25 percent throttle)

Throttle position indicates how much the driver is requesting airflow and engine load. In drive cycles, limiting throttle (like “no more than 25 percent throttle”) controls engine load so the ECU can run monitors under defined operating conditions. Keeping load consistent improves repeatability of emissions and diagnostic results.

Ferrari 360
Car

Ferrari 360

The Ferrari 360 is a classic Ferrari sports car. Here it’s mentioned to show that even a low-mileage exotic can require special driving so its emissions system is considered ready for testing.

Term

emissions effectively

The car constantly checks how cleanly it’s burning fuel. It uses sensors to make sure the exhaust matches what the emissions rules expect.

Term

oxygen sensor

The oxygen sensor checks what’s coming out of the exhaust. If there’s too much oxygen, the car knows the mixture isn’t right and can adjust it to burn fuel more cleanly.

Volkswagen Jetta
Car

Volkswagen Jetta

This is a 1998 Volkswagen Jetta GLX with a VR6 engine. In the story, the owner is using it as a donor car and paying attention to the car’s emissions computer checks (like EVAP monitors).

Term

pending codes

Pending codes are OBD-II diagnostic trouble codes that have been detected but not confirmed strongly enough to trigger a full “confirmed” check-engine status. They can indicate an intermittent fault and may affect emissions readiness or test outcomes.

Term

raw hydrocarbons

Raw hydrocarbons are basically unburned fuel vapors getting out into the air. They’re bad for the environment and air quality.

Term

Bellows

A “bellows” is a stretchy, accordion-like seal. In this context, it helps the gas pump nozzle fit tightly so fuel vapors don’t leak out while you’re filling the tank.

Concept

actively sucking in vapors

The description matches a vapor-recovery style refueling system: as liquid fuel flows into the tank, the system draws in displaced air/vapors from the tank side. That prevents vapors from venting to the atmosphere and routes them back into the fuel delivery system for capture.

Term

positive pressure pump

A positive pressure pump is a device that pushes air into a system to make it pressurized. Here, it’s used to run a leak test by pressurizing the tank area so the car can see if pressure holds.

Term

fuel system pressure test

Cars sometimes run a test to see if there’s a leak in the fuel-related parts. They pressurize the system and check if the pressure stays steady—if it doesn’t, the car assumes something is leaking.

Term

diagnostic trouble code

A diagnostic trouble code is the car’s way of saving an error message. If the leak test fails, the car stores a code that tells a mechanic what system to check.

Term

OBD readiness / monitor completion

Your car keeps track of emissions tests it has run. When those tests finish successfully, the car marks them as “ready,” which can matter for inspections and whether a check-engine light is considered resolved.

Term

secondary air pump

The secondary air pump helps the exhaust system clean up emissions right after you start the car. It adds extra air so the catalytic converter can work more effectively while the engine is still warming up.

Term

coolant reaches 80 degrees Celsius

The car uses coolant temperature as a “warm-up” indicator. Reaching a target temperature like 80°C helps make sure the emissions tests run under the right conditions.

Term

deceleration / lift-off on level ground (fifth gear)

They’re describing a very controlled driving moment: same speed, same gear, then letting off the gas without changing anything else. That steadiness helps the car’s systems run their checks the way they’re supposed to.

Term

idle

Idle is when the engine is running while the car is stopped. The car is basically “waiting,” usually at low engine speed, and some sensors and emissions systems only show problems in this mode.

Concept

engine swap

An engine swap means putting a different engine into a car that didn’t originally have it. Even if the engine runs, the car’s computer has to be set up correctly so it doesn’t think something is wrong.

Term

smokechecked the car

“Smokechecking” is a leak-detection method where a technician introduces smoke into a system (often the intake or vacuum lines) to see where it escapes. If smoke leaks out, it reveals cracks, loose connections, or other unsealed paths that can cause trouble codes.

Term

intake system

The intake system is the route air travels to the engine. If there’s a leak somewhere in that path, the engine can get the wrong amount of air and the car may log a fault.

Term

vacuum leaks

A vacuum leak is like a small air “hole” in the engine’s hoses. Instead of the engine pulling air in the right way, it sucks in extra air, which can make the car run rough or throw codes.

Term

purge valve that goes to the outside

This valve controls where the fuel vapor pressure goes. One path helps send vapors into the engine, and the other path vents/controls them so the system works correctly.

Term

normally open

“Normally open” means the valve is open when it’s not powered. When it’s powered (energized), it changes state, which affects how vapors move.

Term

Schrader valve

A Schrader valve is like the little valve stem on a tire. It lets you add pressure so you can check whether something is leaking.

Term

vacuum hose

A vacuum hose is a small tube that moves low-pressure air. In this case, it’s used to hook up a tool to test for leaks.

Concept

smoke machine leak test

This is a leak test where a machine pumps in harmless smoke. If the smoke shows up somewhere it shouldn’t, you’ve found the leak.

Term

external purge valve

A purge valve controls how vapors are routed—typically from a charcoal canister into the engine to be burned. “External” here suggests a serviceable valve used to isolate the system during testing so smoke doesn’t flow where it would hide a leak.

Term

gas cap

The gas cap seals the fuel tank. If you open it after pressurizing the system, any trapped pressure (and smoke) will come out, helping confirm where the leak is.

Term

flexible line

A flexible line is a rubber or hose section that connects parts and can flex as the car moves. Those connections can get old and start leaking.

Term

hose clamp

A hose clamp is the metal band that squeezes a hose onto a fitting. It helps stop leaks by making the connection tight.

Term

plastic

They’re saying the part is made of plastic, so you can’t tighten it as hard as you would a metal part. Too much force can crack it and cause a bigger repair.

Concept

pressurizing and watching for smoke to locate a leak

The speaker is using a leak-detection approach: pressurize the system, then visually monitor for smoke escaping from a suspected area. This is a practical method for finding very small leaks that may not show up immediately or may be too minor to measure with basic tools.

Term

floor pan

The floor pan is the part of the car’s body that forms the floor. If you have to run a line through it, you’re routing something through the car’s structure, so you have to be careful not to damage it or create new problems.

Term

purge valves

The purge valve is like a switch that lets stored fuel vapors get sucked into the engine to burn. If it doesn’t open when it should, the EVAP system may fail its self-check.

BMW E46
Car

BMW E46

The BMW 3 Series is a luxury car line from BMW. The podcast mentions the E46 M3, which is a high-performance version of the 3 Series. The point is that someone drove it a lot, showing these cars can be used regularly.

BMW M3
Car

BMW M3

The BMW E46 M3 is a specific older M3 generation from BMW. Here it’s just being used as an example of a car that has had emissions/monitor-related issues.

Term

smogged it

“Smogged it” means the car was tested for emissions. The testing checks whether the car is producing acceptable pollution levels, and sometimes it also checks that the car’s self-tests have run.

Term

California Bureau of Automotive Repair

In California, there’s a government office that handles car emissions rules and testing. If your car has trouble passing smog, that office can get involved through special testing or review.

Term

referee

A “referee” is like an expert emissions tester. If the normal smog test doesn’t make sense or the car keeps failing for confusing reasons, the referee can take a closer look.

Concept

emissions readiness / monitor completion

Some emissions tests don’t just measure exhaust—they also check whether the car has run its own internal “checks.” If those checks haven’t happened yet, the test can fail or be delayed even if the car is actually clean.

Term

smoke test

A smoke test is a way to find leaks in the car’s vapor lines. The shop fills the system with harmless smoke, and if there’s a crack or loose connection, you can see the smoke escaping.

Term

computer

When they say “the computer,” they mean the car’s onboard electronics that control the engine and emissions systems. If it’s not happy, it may not have enough driving conditions to finish its self-checks. That’s why they talk about doing drive cycles again.

Concept

rolling dyno

A rolling dyno is a setup where the car’s wheels sit on rollers and the car can be “driven” in place while equipment measures what’s happening. The idea here is that you might be able to mimic the driving pattern the car needs for its emissions tests, but it’s not something everyone can do easily.

Term

Vagcom

Vagcom is a diagnostic tool for Volkswagen cars. It lets you read codes and sometimes run tests so you can figure out why the car’s computer isn’t ready for emissions checks.

Company

Rostack

Rostack is the company behind a diagnostic software package. It helps you talk to the car’s computer to run tests and see what it’s reporting.

Concept

emissions readiness / monitor not setting

Sometimes the car’s emissions system has a problem that shows up only sometimes (“intermittent”). When that happens, the car may not complete its emissions readiness checks, so it can’t confirm everything is OK.

Term

intermittent leak

An intermittent leak is a leak that doesn’t happen all the time. Emissions systems are sensitive to this—if the leak shows up during the computer’s test, it may fail to mark the car as ready.

Term

catalytic converter

A catalytic converter cleans up the exhaust gases before they leave the tailpipe. If it’s old or replaced, it can change how the car’s emissions checks behave.

Term

combusted emissions

Combusted emissions are the exhaust fumes made when the engine burns fuel. The catalytic converter helps clean those fumes up before they leave the tailpipe.

Concept

Air injection / secondary air system

Some cars add extra air into the exhaust to help clean up leftover fuel that didn’t burn in the engine. It’s mainly an emissions-control trick, not a power upgrade.

Term

Exhaust

The exhaust is where the engine sends its used gases after combustion. How it’s shaped and how air moves through it can change how the car runs and sounds.

Concept

airbox

The airbox is like a “container” for the air going into the engine. Changing the airbox setup or what filter you use can change how much air the engine gets and how smoothly it gets it.

Term

PAPER Airfilter

A paper air filter is the common type of filter material used in many cars. If it blocks airflow too much, the engine may not breathe as well, which can hurt performance.

Term

Flügel-Trims

“Flügel-Trims” sounds like the settings for adjustable aero flaps/wing angles. If the car’s airflow changes (like with different intake parts), you may need to tweak the wing settings so the car still makes the right downforce.

Concept

restriktiv

“Restrictive” means it’s blocking airflow. If the intake path is too restrictive, the engine can’t get as much air, so performance and feel can change.

Term

mass air flow sensor

The mass air flow sensor tells the car’s computer how much air is going into the engine. If that signal is wrong, the computer can’t meter fuel correctly, and you may get rough running or warning lights.

Concept

adaptions geklaut

“Adaptions” (adaptations) are learned ECU corrections—like fuel trims and sensor offsets—that the engine computer stores to keep running smoothly. Copying or restoring adaptations can temporarily mask or fix issues after sensor/air-intake changes, but it’s not a substitute for fixing the underlying leak or fault.

Term

Check-Ingin-Light

“Check-Ingin-Light” is the Check Engine Light (MIL), which indicates the ECU has detected a fault and stored a diagnostic trouble code. When it appears after intake/MAF/vacuum changes, it usually means the computer still sees an abnormal condition.

Term

Aftermarket Cone Filter

This is a non-factory air filter shaped like a cone. People use it for better airflow and sometimes a louder intake sound, but it can also affect how the engine runs if it’s not set up correctly.

Term

12-Val VR6

VR6 is a Volkswagen engine layout that combines V6 power with a compact design. “12-val” means it has 12 valves total, and the year matters because emissions equipment can change.

Term

Pending-Kode

A pending code is like a “maybe” warning from the car. It means the computer saw something unusual, but it didn’t happen enough times yet to turn on the full warning light.

Concept

State-by-state emissions testing differences (Oregon vs California)

Emissions rules and inspection strictness vary by state, including how OBD-II readiness and pending codes are treated. The speaker contrasts Oregon’s process with California’s, implying that monitor readiness requirements can make compliance easier in one state than another.

Term

DMV-Registration

DMV registration is the paperwork that legally allows you to drive the car. Some states also require emissions checks as part of registration, so where you register can change what you have to do.

Term

collector plate

A collector plate is a special license plate for certain qualifying cars. It can come with perks, like not needing the usual emissions testing.

Concept

emissions testing exemption for 25 years and older

Some places let very old cars skip emissions checks. That means you can keep driving a classic without having to pass the same pollution tests as newer cars.

Concept

club certifies that it's a significant car

Sometimes a car can get classic-car benefits even if it’s not old enough by age, as long as an approved club says it’s important. It’s like an official stamp that the car is a real collectible.

Toyota Prius
Car

Toyota Prius

They bring up the Toyota Prius to make a point about what people think is “special.” It’s not a deep technical discussion here—more of a debate about car culture.

Topic

Leno's law thing is back on the books again

They’re talking about a law (nicknamed “Leno’s law”) that affects how classic cars are treated by the state. The discussion is basically about rules for older cars and whether states like California should loosen them.

Concept

historical vehicle plate

Some states let older cars get a special “historical” license plate. If your car qualifies, it may not have to do the usual emissions testing.

Term

tailpipe emissions inspection

Tailpipe emissions inspection checks what comes out of the exhaust, typically to verify compliance with emissions standards. The segment suggests that certain older cars with historical plates may be exempt from this specific test.

Term

GPS tracker

A GPS tracker is a small device that can track where a car goes. The hosts are debating whether it could be used to avoid emissions rules, and they point out it might stop working if its battery dies.

Term

emissions checks

Emissions checks are how the government makes sure your car isn’t polluting too much. Newer cars often get checked through the car’s computer, while older cars may be tested differently.

Term

OBD zero car

OBD is the car’s self-check system for emissions equipment. Older cars may not have the same emissions computer checks as newer cars, so the rules for emissions testing can be different.

Term

OBD two

OBD-II is the emissions computer system most cars have. It can store trouble codes and track whether emissions systems are working, and emissions tests can check those results.

Concept

cheating emissions testing

They’re talking about ways people might try to get around emissions rules instead of fixing the car properly. It’s risky because it can backfire (like device failure) and it can also be illegal.

Term

stability control

Stability control is the car’s traction-and-safety system. If the car starts to slide or rotate too much, it can brake individual wheels to help you stay in control.

Term

front-wheel drive

Front-wheel drive means the front wheels do the work of moving the car. It’s a common setup on smaller cars and usually makes the car simpler and cheaper.

Mercedes GLA 250
Car

Mercedes GLA 250

The Mercedes-Benz GLA 250 is a small luxury SUV. The hosts are basically saying they’d use a more “normal” car like this to help with insurance and rules about driving.

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