almost all aftermarket ecu can tune ignition timing. But i suggest u not to tune it by yourself if u r not a tuner bcoz if u make mistake when tuning I/T can coz engine blow. Plz pm me if u need more info.
Car is a merc 1995 s320. Sadly michelin ps3 has no size for this tyre. I'm looking for a tyre comparable to ps3 with this size. Any other recommendations and any good tyre shops in Ipoh area?