There is a little more poke when chipped, certainly enough to get things moving but if you are up in the 20psi terratory you really need an adjustable fuel pressure regulator and a bigger intercooler and it MUST be run on high octane, they do not like tthat old 95 ron dishwater when you run decent power thats for sure.Can only imagine what they must go like with a chip
tyre wise, well there is pro's and cons, wider tyres do offer a little more grip in the dry, not much that you would notice but they dont squeel and leave you with the feeling you are pushing too much, they also make the car feel a lot sharper and dont scrub the sidewalls off at the drop of a hat.
I do have another TCT chip here actualy, and a spare ecu to put it into although this chip states that "Ignition timing dramaticaly altered and the 1bar boost ceiling is removed (must use min 97ron petrol)"
I was supposed to be selling it but its been no trouble at all since ive got it (granted ive only done 2500 miles in it) so ive decided its staying for another summer
D