What kind of fuel are you running? Not all gas is created equal.... I noticed that my 428 running on CAM2 doesn't omit as much of an odor as 400 running on 94 octane with an additive from marathon. I put some 93 octane in the 400 and it did not like it at all it omitted a rancid odor. I've never had any quality tests run on octane ratings of different fuel companies but sure that the info should be available somewhere.
