In terms of High HP FWD cars, a lot of people don’t plan on adding that much power when they first buy the car. I bought my 4-door GTI as a commuter car and to fit my growing family. Added some parts, added some more, admitted I was bit by the mod bug and went nuts to stay on top of the traction.
If you’re willing to do the research and test various suspension parts and setups, there’s no reason why you can’t reign in the power on the street. Going to a big turbo does force you to learn how to drive all over again, but to be honest, the added spool allows for better traction and smooth drivability around town. It’s not like an IHI/K03/K04 with lightning spool where you can roast tires down low all day long. That’s not fast, that’s just fun. Traction is a balance of drivetrain and suspension and it’s taken me years of testing different manufacturers parts and combinations to get it right. Here are the most important excerpts from my build thread related to traction:
Drivetrain:
034Motorsport Street Density Engine & Transmission Mounts – a must have to lock the engine and trans weight down in the engine bay, aids in wheel hop control.
Bridgestone Potenza RE-71R 245/40/17 Tires – wider and extremely sticky rubber.
APR Pendulum Mount with SuperPro Bushings & Racingline (formerly VWR) Subframe Mount – these go hand in hand and IMO are the biggest improvement to prevent wheel hop and gain gobs of FWD traction.
Peloquin’s Limited Slip Differential – the biggest upgrade for traction dispersion between both front tires.
Suspension:
H&R Front 26mm & Rear 24mm Sway Bars – more for traction in turns but aids in coupling the front tires and the rear tires.
ST Suspensions XTA Coilover Kit – allows me to adjust front camber to -1 degrees as FWD cars go into positive camber (targeting 0) upon acceleration. Allows me to set the front dampers to 75% soft to soak up road imperfections and travel and the rears to 50% stiff to help prevent squat without being too harsh. Allows me to corner balance the car with me inside the driver’s seat so the weight is 50/50 side to side and 60/40 front to back. Equal side to side weight and more weight at the front allows for more traction.
Stern Rear Subframe Brace – keeps the rear subframe locked in place which allows the suspension to work more effectively.
SuperPro Control Arm Kit – includes the anti-lift kit which provides additional caster (shifts the transverse engine weight forward over the front axles and tires).
Swift Rear 400lb Progressive Springs – Prevents rear squat and ultimately front lift on acceleration.
TyrolSport DeadSet Rigid Front Subframe Collar Kit – keeps the rear subframe locked in place which allows the suspension to work more effectively.
TyrolSport DeadSet Rigid Rear Subframe Collar Kit – keeps the rear subframe locked in place which allows the suspension to work more effectively.
TyrolSport Hatch Brace – more for traction in turns but aids in coupling the rear tires.
Unibrace UB – keeps the center of the chassis stiffer which allows the suspension to work more effectively.
Whiteline Rear Trailing Arm Front Bushings – Optimizes rear suspension geometry.
Eventually I’ll replace every suspension bushing with SuperPro bushings.