Just a loose wire that made my car go mad at approximately 2500rpm.
Handling could be a bit better maybe when lowered an inch or two, this could improve the cornering.
This car is fast and thanks to company's like Cituning it can go even faster (up to 250bhp!!)
250bhp with a VTS os 120bhp? Don't tell lies to people ; the best you can get with all the usual mods is 160bhp, and that's for the complete modding.
If you want a little more than 160bhp you can try addind a turbo or two, but then the price might get higer...
Regards, TG.