VW T-Roc Tuning

"Thanks for reading this VW T-Roc tuning guide."

The T-Roc is a good project car to play with. If you do your planning then you can create an awesome T-Roc but don't be fooled there are lots of performance mods out there that will simply not suit it read our unbiased guides first.

Turning our attention to the T-Roc's engine we need to get a bit more power out of the top end.

The best power gains come from larger engine sizes. The more you start with the bigger the return on investment so engine swaps are good value mods for small engined cars.

Engine Tuning.

Typically these performance parts are usually carried out by our members, decide how far you want to push your car before you get going.

Getting the correct grade of sports parts for your planned usage of the car is essential. Stage 3 (competition) mods just won't work well on the road making the car difficult to drive.

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Stages of Tune

Stage 1 mods: Panel air filter, Suspension upgrade (drop 30-40mm), Lighter flywheel, Remap, Sports exhaust, Alloy wheels.

Stage 2 mods: fuel pump upgrades, high flow fuel injector, Power/Sport clutch, Fast road cam, Ported and polished head.

Stage 3 mods: Internal engine upgrades (pistons/head/valves), Adding or upgrading forced induction (turbo/supercharger), Sports gearbox, Competition cam, Engine balancing.

You really need to keep as much low end torque as you can and aim for a long power band across the rev range rather than a narrow top end power spike.

In this article we shall give your a good starting base to the best mods for your car, but we'd encourage you to spend some time on the site looking into the details of each type of performance modification.Fast road cams offer one of the biggest torque gains for your money as far as a bolt on performance mods goes on a NASP engine.

The exhaust and intake flow play a large part in your cars power band, but be careful here, getting this wrong can upset the idle and make the car hard to drive in traffic. You'd need to follow a camshaft upgrade with other mods and finish with a reflashed ECU to fully release the power gain.

You will need to ensure that the engine is not starved of fuel so will need to look at the fuelling.

If you find you have flat spots and surges after your modifications you should check the fuelling and try a higher octane fuel as well. Increasing the injectors is another beneficial modification and will deliver sufficient fuel.

Uprate the fuel pump to cope with the extra fuel requirements of your tuned T-Rocs uprated injectors.

Intake and Exhaust Tuning.

The next area for modification is the intake and exhaust. Please note that WE DO NOT FIND IMPROVEMENTS WITH INDUCTION KITS, unless you have tuned your car massively and are finding that the standard air intake has become a restriction.

For most T-Roc engines TorqueCars would suggest you just go with a washable panel air filter. On heavily tuned engines and turbo vehicles an induction kit will help release the power providing you address the problem of supplying cold air.

Sports exhausts can help equal out the flow of air through the engine. But if your exhaust is too large, ie: over 2.5 inches bore, you will lose a great deal of your flow rate and end up lacking power and torque.

Airflow through the head can be dramatically increased with some professional flowed (porting and polishing). These should match and be setup to take into account any other engine mods. Your clutch can fail if it starts to weaken and the standard clutches are only ever good for power gains of up to 48%. Fit an uprated clutch to avoid power loss through the transmission. The best mods in our experience for your T-Roc are fast road camshaft, remap, induction and exhaust, suspension.

Remaps offer massive power gains on all turbo charged cars. On NASP engines the benefits are doubtful. However a remap on a NASP engine will help unleash the potential if you have done a lot of mods.

We've also come across some owners toying with twincharged applications and making some seriously high power figures.

Despite the large cost involved adding forced induction to a NASP engine will give large power gains. It is often cheaper to bolt on a supercharger than it is to bolt on a turbo. It is difficult to map fuelling with a turbo as the boost comes on exponentially with rpm.

It is simpler to map a supercharger because the boost is correlating to engine speed on a linear curve. Adding forced induction will generally require a lower compression ratio or water injection.

Handling/Suspension upgrades

Many T-Roc owners uprate the handling of their cars with coilover suspension mods as a priority, this will certainly increase your enjoyment of the car.

Fully adjustable suspension allows you to fine tune the handling of you T-Roc greatly improving your drive.

We would go to a maximum drop of 29mm - 38 mm on most models. You risk grounding out if you go lower than this.

Alloy wheel upgrades.

The benefits of alloys include lowering your unsprung weight and better brake cooling. Don't forget that your choice of rubber greatly affects your cars grip and handling. It is not worth compromising performance with cheap tyres when you can buy track legal slick performance tyres.Please note that although they can look cool on the T-Roc big alloy wheels will actually decrease your performance. The larger you go the lower your acceleration will be - this to the change in your effective final drive ratio.

Although some people have installed larger rims without issues we would stick to a 16 inch rim size as the maximum.

There is a more updated version of this VW T-Roc Tuning article on TorqueCars.com.

For more information on Tuning your car please join us in our friendly forum where you can discuss T-Roc options in more detail with our T-Roc owners. It would also be worth reading our unbiased VW tuning articles to get a full grasp of the benefits and drawbacks of each modification.

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