Quote Originally Posted by born2pdl View Post
91 octane is the only easily available premium fuel here. Seems like I'm still getting KR with my stock 06 GT with 91. I just want to be able to hit WOT on 91 without worrying about KR. I'm open to ideas, suggestions and learning...
KR on a stock engine is normal, Ive had three of these cars now each one had kr stock at wot. 3-4* is normal, anything else and you may want to buy some exhaust mods (power log, down pipe, headers etc) and clear it up.