i`ve lexus is 250 and i want some tunings like chip tuning or supercharger or some turbo, if you have any idea or some dealers pleasegive me some advise.. thanks...

hello,

There is not a lot you can do with the 250 aside from induction kits/exhausts as the engine is all alloy it can't take too much boost. Also the ECU has not yet been "cracked"

if you check out the myis forums in amewrica you will get a flavour of what can be done