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The man who revolutionised performance driving: Racelogic's Julian Thomas

The man who revolutionised performance driving: Racelogic's Julian Thomas

The evo podcast Nov 14, 2025 70 min
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About this episode

Julian Thomas, founder of RaceLogic, shares his journey from a young electronics enthusiast to revolutionizing performance driving with the V-Box. He recounts early experiences with his father's electronics company and his passion for motorsport, which led to innovations in traction control and data logging. The discussion highlights his collaborations with notable figures in racing, the development of GPS technology for motorsport applications, and personal anecdotes about his racing experiences, including his beloved Aston Martin DB6. Julian's story is a testament to the intersection of technology and automotive performance.

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Technical Too Afraid to Ask
Car

Aston Martin DB6

"And he'd up paying more than anyone paid for DB6 before."

The DB6 is a classic luxury car from the 1960s, famous for its smooth ride and strong engine.

Company

RaceLogic

"Julian Thomas, who is the boss and founder of a company called RaceLogic, which many people will know, produce the V-Box"

RaceLogic makes gadgets that record racing data, helping drivers and teams improve performance.

Concept

Silverstone

"We used to go to Hill Climes, used to go to Silverstone"

Silverstone is a famous race track in the UK where cars compete in big events like Formula 1. It’s known for its fast corners and long history.

Concept

Hill Climes

"We used to go to Hill Climes, used to go to Silverstone"

Hill Climes is a famous race track in the UK where cars drive up steep hills. It’s popular with racing fans and drivers who enjoy a tough uphill challenge.

Term

PLC

"[363.2s] is called a PLC, Programmable Logic Controller."

A PLC is a small computer that helps machines do tasks automatically, like turning lights on or off based on what it senses.

Term

qualifying tires

"until I thought, I know, I'll make some qualifying tires. So I got the scale electric, the standard rubber tires"

Qualifying tires are special racing tires that give you the best traction for a few laps, like when drivers try to set the fastest time before a race.

Term

copydecks

"and I coated them with copydecks. And I found that if you let that for about half an hour, they become sort of quite tacky"

Copydecks is a product you can put on racing tires to make them stick better to the track, helping you go faster for a short time.

Brand

Superchips

"[471.9s] With yes. Yes, I worked for Superchips."

Superchips makes tools that help car owners tweak their engines to get more speed or better fuel use.

Term

detonation techniques

"[480.4s] So it was detection techniques or we we called it detonation techniques."

Engine knock is when the fuel in a car’s engine explodes too early, which can hurt the motor. Detonation techniques are ways to spot and stop this problem.

Term

turbocharged

"This is the start of the turbocharged. Yes, car era, isn't it?"

When a car is turbocharged, it has a small turbine that pushes extra air into the engine so it can make more power.

Term

ECU

"Yes. So the ECUs would control the fueling and timing."

The ECU is like the car’s brain; it tells the engine when to add fuel and spark so everything runs smoothly.

Term

boost pressure

"you needed to turn the boost pressure up, for example."

Boost pressure is the extra air pushed into an engine by a turbo or supercharger. More boost means more power, but it also puts extra stress on the engine.

Term

fuel cut

"it would just cut the fuel so you couldn't get any more power out of it."

Fuel cut stops the engine from getting more fuel when it’s pushing too hard, like when boost is too high. It protects the engine from overheating or breaking.

Concept

reverse engineer software

"So you had to reverse engineer all the software."

Reverse engineering software means looking inside a car’s computer code to see how it works and change it. People do this to unlock more power or tweak performance.

Car

Ford Escort Cosworth

"So when we first cracked the escort Cosworth, I was the first one that managed to remove the boost limits on that."

It’s a special, faster version of the Ford Escort that was used in racing. It has more power and better handling than a regular car.

Term

dyno

"And would be I would work with him on the dyno,"

A dyno is like a special machine that tells you how strong your car’s engine is. It helps people make sure the engine runs as well as it can.

Term

engine management system

"where I'd be changing the engine management system."

The engine management system is the computer inside a car that decides how much fuel to put in and when to spark the engine. Changing it can make the car run better or faster.

Term

ignition map

"because I would sit there and I'd have the ignition map"

An ignition map tells the car’s computer exactly when to spark each plug so the engine runs smoothly. Think of it as a recipe for the engine’s timing.

Term

fuel map

"and the fuel map in front of me and he'd go, right, you know, look at the turbo temperature"

Think of it like a recipe that tells the car how much gas to use depending on how fast it's going and how hard you press the gas pedal.

Part

active clutch

"We developed an active clutch"

An active clutch is a special kind of clutch that can turn on or off by itself, helping the car use power better and drive smoother.

Car

Peugeot 205

"and I developed it on my road car. I had a Peugeot 205 1.9 GTI that was absolutely fantastic. And I fit..."

The 205 CTI is a special, faster version of the small Peugeot 205 car. It has a stronger engine and better brakes so it can go faster on racetracks or in rally races.

Car

Volkswagen Golf GTI

"...loped it on my road car. I had a Peugeot 205 1.9 GTI that was absolutely fantastic. And I fitted whee..."
Car

Chevrolet Corvette

"...ms trying to get decent data, including Datron's Corvette. But yes, this that was the standard at the time..."

The Corvette is a famous American sports car that has been made for many years. It’s known for its fast engine and sharp looks.

Term

GPS

"And I had just got into GPS because it was an interesting technology. And I thought and I was speaking to a guy that used to import our stuff into Japan and he said, can you not use GPS to give you like a reference?"

GPS is like a giant invisible map that tells your car where it is and helps you find places. It uses satellites to give directions and can even help a car know its exact spot on the road.

Car

Toyota Corolla

"... remember I put it on. We had a Toyota, was it a Corolla or something? And I put it on this car and conne..."

The Corolla is a small, everyday car from Toyota that many people own because it’s cheap to run and rarely breaks down.

Car

Mazda Rx7

"So I made a prototype. I had a Mazda RX7, the old twin turbo. Yeah. Rotary thing that was..."
Part

rotary engine

"Yeah. Rotary thing that was my friend or the guy at work"

A rotary engine is a special type of engine that uses a spinning triangle instead of the usual pistons, giving it a unique sound and shape.

Concept

automatic speed limiter

"all about this sort of automatic speed limiter."

It’s like a speed governor that stops the car from going too fast, which can help keep drivers safe and meet legal limits.

Concept

racing cars

"And the best bit is you got to do more development by going racing. Yes. So spending your time racing cars."

Racing cars are special versions of regular cars that have been changed to be faster and better on a race track. They usually have stronger engines, lighter parts, and special brakes to help them win races.

Concept

James Hunt Racing Centre

"And yes, it was that that was down to James Hunt Racing Centre. And that's how I met Dave Clark, actually."

James Hunt Racing Centre is a place where people can drive on a real race track to learn how to drive faster and safer. It’s named after the famous Formula One driver James Hunt.

Term

lap time

"I went down to the James Hunt Racing Centre and I set a lap time and I popped up to the top of the charts."

A lap time is how long it takes you to drive around the whole track once. In racing, lower lap times mean faster driving.

Term

data log

"I want to put a data log on a car and they go, right, I'll log everything."

A data log is a file that keeps track of things like speed and engine speed while you drive.

Car

Ford GT40

"...amous archive photos, like they're a Ford with a GT40 or whatever it might have been. And there's a bo..."

The GT40 is a famous racing car from the 1960s that won many big races. It’s known for being very fast and strong.

Car

TVR Tuscan

"... very familiar. So there's my first run in a TVI Tuscan. Right."

The Tuscan is a small British sports car that can go fast because it has a strong V8 engine and light body.

Car

Jaguar Etype

"You've done quite well in the Chevron. Then you get bumped out of Masters with the E-Type or something upset you about the organization of the Masters series, didn't they? Yes."
Car

Shelby Cobras

"...it, but Masters didn't want an E-Type beating the Cobras because back in the day they didn't. The Cobras ..."

The Cobra is a very old American sports car that was made to be fast. It has a big engine and a light body.

Car

Ford Cortinas

"Yeah. And I did it with Cortinas and a few other things as well, didn't they, to t..."

The Cortina is a small Ford car that many people in the UK used. It’s known for being simple and easy to fix.

Concept

arms race

"A lot of people say there's an arms race, you know, producing all the engine to produce ridiculous power and they got trick suspension parts."

It means people are trying to make cars that can do more and more, like a game where everyone keeps adding better parts.

Term

grunt

"you might get power at the top end, but you've lost all the grunt coming off the corner."

It means how much pull or strength the car has when you start moving from a stop.

Term

horsepower

"So you actually, you can add another 50 horsepower and go slower."

It tells you how strong the engine is; more horsepower usually means a faster car.

Car

Chrysler Daytonas

"...g back on their brakes. And now TBRs are beating Daytonas just about. It's 50-50 now."

The Daytona is a big, fast American muscle car from the 1970s. It has a strong engine and sharp looks.

Car

Nissan Skylines

"R32. Skylines. The BMW M3s."
Car

Audi R8

"...ly get on with them. But then I drove a friend's Audi R8 at a recent winter test. He said, oh, could you ..."

The R8 is a very fast German supercar that has a strong engine in the middle of the car. It’s known for its sharp looks and good handling.

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