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Maximizing Power & Fuel Economy

Maximizing Power & Fuel Economy

Two Guys Garage Podcast May 14, 2026 34 min
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About this episode

Power and fuel economy get tied together through airflow-first upgrades: the hosts frame engines as “air pump” systems and compare classic “power adders like turbos and superchargers” with simpler intake changes. The guest explains how a forced-induction mindset led to a fan-assisted intake, including airflow specs and dyno validation. They also break down why dyno wide-open-throttle numbers can mislead real riding, emphasizing part-throttle behavior, throttle-blade restriction, and matching airflow capacity to engine demand—plus reported mileage gains from the Straight Shooter Air Intake.

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Term

superchargers

"We know how difficult power adders can be power adders like turbos and superchargers [65.3s] You know, they they have their place"

A supercharger is a device that forces more air into the engine. Since it’s driven by the engine, it can help the engine make more power, especially at lower speeds.

Concept

power adders

"We know how difficult power adders can be power adders like turbos and superchargers [65.3s] You know, they they have their place"

Power adders are upgrades that help an engine make more power. They usually work by getting more air into the engine so it can burn more fuel efficiently.

Term

turbochargers

"We know how difficult power adders can be power adders like turbos and superchargers [65.3s] You know, they they have their place"

A turbocharger uses the engine’s exhaust to spin a device that pushes more air into the engine. More air can mean more power, as long as the engine is set up to handle it.

Term

air intake

"But nowadays you can get a little more power than the other guy simply by adding a really cool air intake [89.0s] Think about your air filter."

An air intake is how air gets into the engine. If the intake is restrictive, the engine can’t breathe as well—so upgrading it can help the engine perform better.

Term

air filter

"Think about your air filter. So you've seen air filters on your dirt bike, right? [94.1s] How many times have you changed the air filter yet on your dirt bike?"

The air filter keeps dirt out of the engine. If it gets clogged, it can make it harder for the engine to get the air it needs to run well.

Term

restricting my performance

"What as opposed to clogging the air as opposed to restricting my performance, right? [119.7s] Yeah, imagine if if you will a fan"

This is about anything that makes it harder for the engine to breathe. If air can’t flow freely, the engine can feel weaker and use fuel less efficiently.

Term

velocity

"Shoot air into your your fuel injection into your system, right? [106.0s] If you could speed that velocity up"

Velocity here means how fast the air is moving into the engine. If the intake is restrictive, the air doesn’t move as well, and the engine can lose power.

Concept

boost of ice

"Yeah, yeah, but this is something not only increases power, but miles per gallon [152.2s] Yeah, yeah, but this is something not only increases power, but miles per gallon [145.9s] You know their hot rod or whatever and and you know try to go out there and make a home brood sort of boost of ice"

They’re talking about ways people try to push extra air into an engine to make it feel stronger. If the engine can use that extra airflow, it can make more power.

Term

miles per gallon

"Yeah, yeah, but this is something not only increases power, but miles per gallon [157.8s] Unbelievable and and there's honest God"

Miles per gallon (MPG) tells you how far a car can go on one gallon of gas. Higher MPG means you spend less on fuel.

Concept

10 horsepower

"and when you think about what what he's done [184.6s] And you know if you're moving the needle say you have 10 horsepower [189.4s] If you increase 10 horsepower by a horsepower or two, man"

Horsepower is how much “pull” the engine can make. The hosts are saying that even a small increase can make the car feel different when you drive it.

Term

torque

"and how it feels and torque man [208.1s] You could definitely feel that and that's what that's what it's all about is getting power that you could feel at a price"

Torque is the engine’s twisting force. It’s what helps the car move strongly, especially when you’re not revving high.

Term

cams

"Over the years I've been trying different things different motor combos different cams different exhausts different trying different things"

Cams (camshafts) control valve timing—when the engine opens and closes its intake and exhaust valves. Changing cam profiles can shift where an engine makes power and torque, which matters for both acceleration feel and fuel economy.

Term

Pro charger

"I ran a pro charger on my bike for a couple years to see on that but [255.1s] Phenomal for power great."

A “Pro charger” is a type of supercharger. It forces extra air into the engine so the bike can make more power.

Car

Dodge Charger

"...sts different trying different things I ran a pro charger on my bike for a couple years to see on that but ..."

The Dodge Charger is a large performance car made for fast acceleration. People often modify them to make more power, especially if they’re interested in racing or quick launches. It’s brought up when someone is talking about experimenting with upgrades and results.

Concept

forced induction

"What what it is every engine out there is nothing more than an air pump, right? It's a big fancy air pump [284.0s] Yeah, huge. It's a huge air compressor. How fast can you get the area and how fast can you get it out?"

Forced induction means adding a system that pushes extra air into the engine. More air helps the engine burn more fuel and make more power.

Topic

bagger

"when he said he was racing a bagger [350.7s] He's not playing y'all the guy has been a glamist on his bagger setting world speed records"

A “bagger” is a touring motorcycle with bags (saddlebags) and usually a big fairing. The hosts are pointing out that this one is being used for racing, not just cruising.

Concept

Bonneville

"But when you're thinking baggers this dude's been on the Bonneville soft flats cracking 150 plus ass"

Bonneville is a famous salt-flat racing location. People go there to chase very high speeds and test how fast their vehicles can go.

Term

cfms

"It's it's it's a it's a brushless fan. It's a runs at 7500 rpms blows 150 cfms in and it's blown into wind speed at"

CFM is a way to say how much air a fan moves. More CFM generally means the fan can push more air.

Term

rpms

"It's it's it's a it's a brushless fan. It's a runs at 7500 rpms blows 150 cfms in and it's blown into wind speed at"

RPM means how fast something spins, measured in revolutions per minute. Higher RPM usually means the fan is moving faster.

Term

brushless fan

"It's it's it's a it's a brushless fan. It's a runs at 7500 rpms blows 150 cfms in and it's blown into wind speed at"

A brushless fan is a fan driven by a motor that doesn’t use brushes. It can spin efficiently and reliably, which helps when you’re trying to move a lot of air.

Term

dyno

"but by all means test one on the dyno trying to figure out what's working what doesn't work [599.3s] How you know how to set it up the design of the backing plate?"

A dyno is a test machine that measures how strong an engine is. Instead of guessing, you can try different parts and see what actually improves power or efficiency.

Term

backing plate

"How you know how to set it up the design of the backing plate? Um has a lot to do with it. Um has a lot to do with it."

A backing plate is a support piece that helps hold the intake part in the right position. Where it sits and how it’s shaped can change how smoothly air flows into the engine.

Term

wide open throttle

"They don't know what they don't understand is that's wide open throttle Yes, they're chasing that holy grail of who's got the most horsepower and torque"

Wide open throttle means you’re pushing the gas pedal all the way down. That’s when the engine gets the most air, and dyno tests often measure power at that extreme.

Term

intake air temps

"So when you wick the throttle you get fast quick acceleration quick throttle response cooler intake air temps Increase the horsepower and torque and the number one thing that everybody's come feedback is increase of fuel mileage"

Intake air temps are how hot the air is when it goes into the engine. Cooler air is denser, so the engine can get more usable oxygen for combustion.

Term

atmospheric pressure

"Kevin let me let's point out something that has has gone kind of under the table He's in Denver, Colorado where the just atmospheric pressure Is significantly different than it is say in florida"

Atmospheric pressure is how heavy the air is where you live. If the air is heavier, engines can usually get more oxygen, which can change how much power you make and how the engine runs.

Concept

altitude vs air density (Denver vs Florida)

"He's in Denver, Colorado where the just atmospheric pressure Is significantly different than it is say in florida Or you know where you're at or anybody at sea level here."

Places at higher altitude have thinner air. Thinner air means less oxygen for the engine, so the same setup can feel different depending on where you ride or drive.

Term

throttle blade

"So you can see how this component keeping constant pressure on that throttle blade and he's right when you're driving around... So having that constant pressure on that throttle blade you can see how that response time would be a lot quicker"

The throttle blade is a small valve that controls how much air can get into the engine. When you open it, the engine gets more air quickly, so it reacts faster when you press the gas.

Term

throttle response

"So having that constant pressure on that throttle blade you can see how that response time would be a lot quicker... Uh in that throttle response"

Throttle response is how quickly the car or bike reacts when you press the gas. Better throttle response means it feels like it “gets going” right away instead of after a delay.

Term

turbo lag

"Well, it's like the opposite of turbo lag, right? You're not waiting for anything. It's already there as soon as you right crack the throttle correct"

Turbo lag is the hesitation you can feel when you hit the gas and the turbo hasn’t started boosting yet. It’s basically a short delay before the engine gets the extra airflow.

Term

vacuum

"Correct. Just like you said, right? You're not trying to pull and and right create a vacuum"

Vacuum here means low pressure in the intake. The idea is that some systems need time to “pull” air in, while the setup being discussed already has air ready so it doesn’t feel delayed.

Term

14 psi

"And then you only have that 14 psi of atmosphere trying to push its way through the filter and down the inlet"

“psi” is a unit for pressure. The speaker is saying that at baseline you’re relying on normal air pressure (around 14 psi) to push air through the intake.

Term

volume efficiency

"But they really don't realize is is just for instance a 129 cubic inch motor at uh volume efficiency of 85 percent only needs 96 cfms"

Volume efficiency is a measure of how well the engine fills its cylinders with air. If it’s high, the engine can make the airflow it needs more efficiently.

Term

750 cfm carburetor

"I've noticed is on a big v8. They run out of steam... this fan just doesn't have enough oomph to keep up with a 750 cfm carburetor"

A carburetor’s CFM rating is basically how much air it can handle. The speaker’s point is that if the carb is way bigger than what the engine can use, it won’t perform as well.

Concept

air demand matching

"I think what you've done that I haven't seen other people do is right size Right, you've you've right sized the fan capability to the size of the engine and the air demand"

This is about making sure the engine gets the right amount of air for what it’s doing. Too little air hurts power; too much can waste energy.

Concept

20 to 60 percent throttle

"Most of us are driving around with that thing, you know, like you mentioned that that you know 20 to 60 percent We live kind of there"

20–60% throttle describes the common part-throttle operating range where engines spend a lot of time in real-world driving. In that range, throttle opening and airflow matching (not just peak WOT capability) strongly influence response and efficiency.

Concept

altitude affects engine response

"response especially the altitude especially here and especially like you mentioned on a smaller engine"

Higher altitude means thinner air. Since engines need oxygen to make power, thin air can make the engine feel weaker or less responsive unless it’s tuned for it.

Concept

airflow efficiency improving fuel economy

"Wow factor in this has been the gas mileage. Do you know why that is? Kevin why why would gas mileage be so drastically increased? ... now you got the air getting in there at 25 throttle and it's still getting out of that much Power to be able to maintain 25 throttle at 85 instead of 35 throttle"

The idea is that if the engine gets air more easily, it doesn’t need as much gas to maintain speed. Less throttle at cruise can mean better fuel economy.

Term

throttle position

"Say you're running at 85 miles an hour down the highway Your throttle position might be at 30 35 throttle Well, now you got the air getting in there at 25 throttle"

Throttle position tells you how much you’re pressing the gas pedal. If you can go the same speed with less throttle, the engine is working more efficiently.

Term

fuel mileage

"It's one of the ones that I feel it is one of the biggest reasons on the fuel mileage and everything and uh Yeah, I just got back from arizona bike week sold a whole bunch down there And the biggest thing everybody came back to his fuel mileage"

Fuel mileage is basically “how far you can go on a tank of gas.” They’re saying a change they made helped their bikes go farther before needing fuel.

Term

quarter mile

"So I've tested it in quarter mile half mile mile bonneville's three miles Um, I've had it on customers bikes since 2017 2018 testing them running them giving me their feedback"

A quarter mile is a standard short race distance. People use it to see how quickly a bike can accelerate and how changes affect that acceleration.

Car

Yamaha V Max

"I ride a you know a v max yama v max Do you have anything for guys that rides something other than a bagger?"

The Yamaha V Max is a motorcycle model. Here it’s just being used as an example of what someone might ride.

Term

air cleaner

"So I started designing them for them and everything and like this one here is my yamaha air air cleaner and all it is is, you know, and you get the same thing but [1314.8s] Wow"

The air cleaner is the part that filters the air going into the engine. If you change it, the engine can breathe differently, which can change how the bike runs.

Term

fan built into this box

"And I came up with the air cleaner box [1352.8s] Like this that now has the fan built into this box [1356.1s] Um to be able to help hit blow him air too as far as that goes"

This is an airbox with a fan that helps push air into the engine. The idea is to make sure the bike gets enough air during racing so it can run faster.

Term

lap times

"And won the arena cross with it making all his whole shots. He's been improving his lap times by almost a second and a half [1371.7s] Um with and without the air filter"

Lap times are how long it takes to do one full lap on the track. They’re using it to judge whether the modification actually makes the bike faster.

Term

butterfly valves

"How fast the butterfly valves could open and how quick that velocity how it would speed the velocity of the air up"

Butterfly valves are like adjustable doors for the air going into the engine. If they open quickly, the engine gets the air it needs faster when you press the throttle, so the bike feels more responsive.

Term

hood scoops

"The Oda Functioning air intake hood scoops on cars how it would open up and allow"

Hood scoops are openings on the body that help funnel air toward the engine intake. The idea is to get more useful airflow to help the engine run better.

Term

fuel injection

"But now with fuel injection that was back in carbureted days."

Fuel injection is a modern way of adding fuel to the engine using electronically controlled nozzles. It can make the bike run more smoothly and respond better than older carburetor setups.

Term

carbureted

"Have that stuff or you know carbureted bikes are a lot different as far as the air You don't want your fuel to bounce into each other where the carburetor would make bigger droplets"

“Carbureted” means the bike uses a carburetor to mix fuel and air. Fuel injection does that job more precisely, which usually helps with efficiency and smooth running.

Term

atomization

"It's a totally different animal. Yeah the atomization. Yeah So much more efficient and if you get more air in there, you could add a little more fuel to it increase that atomization increase that you know timing and"

Atomization just means “making fuel into a mist.” A mist mixes with air better, so the engine can burn it more completely.

Term

timing

"increase that atomization increase that you know timing and Wicked off a little early get more a lot more power and better mileage to boot so"

“Timing” is when the engine’s spark happens during the engine cycle. Changing it can help the fuel burn at the right moment for more power and better efficiency.

Topic

motocross and dirt riding gains from fuel/air tech

"I see it making big big impacts on things like motocross things like dirt trail riding Uh enduro riding things like that where people get significant gains out of it."

They’re talking about how better fuel/air mixing can make dirt bikes feel stronger and use fuel more efficiently. They mention motocross, trails, and enduro as places where those improvements show up.

Term

cordless

"The technology for fans for electric motors, right? I mean all this cordless stuff cordless drills and all the power that you're getting"

“Cordless” means it runs on a battery instead of a plug. They’re using it as an example of how batteries and efficient motors can deliver a lot of power.

Term

brushless motors

"Deficiency and the power and the density you get out of right these brushless motors. I think between like you said before"

Brushless motors are electric motors that don’t use physical brushes to run. They’re generally more efficient and can pack more power into a smaller package.

Brand

Harley one

"And you know, you had this, you know the two different styles of filters So the the the v2 and the harley one, right?"

They’re talking about two different filter designs, including one associated with Harley. The main idea is how the filter is built and how it fits without looking bulky.

Term

foam

"the dirt bike version, right? I mean From the you know the outside you can't tell it's just this foam Filter just like you have in your bike, right when you flip it over on the inside of it"

Foam filters use a sponge-like material to catch dust and dirt. They can be designed to look clean outside while still filtering well inside.

Car

Rolls-Royce Phantom

"...ike to the starting line And some dude turns that phantom before he kicks his bike on I'm gonna be like wha..."

The Rolls-Royce Phantom is a very expensive luxury car designed to feel smooth and quiet. It’s known for being a top-of-the-line sedan rather than a racing car. It may be mentioned in a story because it’s noticeable and signals luxury right away.

Term

utility patent

"And I'm not done the patent doesn't isn't just for motorcycles It's for any internal combustion motor and it's not a design patent. It's a utility patent"

A utility patent is the kind of patent that covers how a product works, not just how it looks. The speaker is saying their invention is about function—what it does to the engine system.

Term

internal combustion motor

"It's for any internal combustion motor and it's not a design patent. It's a utility patent So I'm not done with it."

An internal combustion engine is the type that burns fuel inside the engine to make power. The speaker is saying their idea applies to gas/diesel-style engines.

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