Originally Posted by
Rob777
Hey lup thanks man, read it, really understanding now! Could you please if u have time, tell me ur ltft at idle? I'm up near -18 at idle and -7 at part throttle which I understand is normal anyway but the idle confuses me. Also does ur AFR go into the nines at WOT?
Basically the the -17/18 ltft at idle, the +56 stft at wot and the noise which comes and goes at around 4000rpm are all related. I'm positive. I'm also positive there is no leak in the intake. The cause is between TB and exhaust. Im thinking injector seals (mazda did something here last time they looked at it). It holds boost fine but somewhere along the way, after being cooled it has to be escaping. To me this will explain everything.