not alot you can do really unless you spend mega money,get a k&n or similar or a decent panel filter for ure original air box,make sure everything is good,ie plugs,leads etc. more costly,get a full stainless exhaust,maybe a de-cat,didnt know til recently my old gti was de-catted and went really well,if you can weld u could do that ureself

just make sure theres plent of cold air getting thru ure air filter or induction kit,maybe a shield u could cut out of 5mm steel sheet and make sure u stop hot air getting in.decent suspension will make the car alot safer thru the bends,other than them idea's

not much else unless u go the way of a superchip and re-map,but then things will get a bit costly! go with the suspensio 1st even if its just springs for now! hope this helps
