I've only fairly recently got into tuning cars on GT4 having been a fanatic on GT2 especially modifying 1992 Supra Turbos, I had about 12!!! I'd tuned an S2000 before, and an MR2 on GT4, but this past weekend I bought a second hand TVR Griffith and bought all top spec parts, spoiler, oil change...550BHP with only minimal understeer at times. Glorious car!!! So, as I hadn't sorted the European Hot Hatch championship i did the same with a Mk.IV Golf GTI, very similar effects. Now I plan on doing the same with a lot of other cars to build a really awesome garage, I'll keep updating this thread with my progress, so whats the best car/cars you've ever tuned, not necessarily all the way, just to have made some changes?