Thread: Smelly exhaust at WOT

Ok lately I've been noticing exhaust fumes in the cabin after full wot. Never had this issue before so I'm trying to gather some insight. Recent changes to the car include oil change and PCM from reptile. Any thoughts? Also my ltfts lock in a 4.6 at wot if that helps. Isn't the tune because before sensor values were calibrated the ltft and stft locked in at 0.0.

I'm thinking two weeks after the oil change. Exhaust leak is likely but I'm not sure. I did do some listening under the hood and all I gathered was some clicking noises that I attributed to being my injectors.

Also cat is fairly new

Could it be anything else?

I'm having the same issue, I've got an 05 N/A, and after I go WOT, I can smell some exhaust fumes or possibly the smell of burning oil after being on it for a bit or letting off. I replaced my valve cover gaskets and grommets with Felpro's within the month. There IS still residual oil right along the edges of the valve covers, left from when the old ones were leaking. It's been raining here constantly, so I haven't had a chance yet to degrease and detail the engine bay. Could that be causing it?

I'll have to listen for any ticks that obviously aren't the injectors, but even if it was an exhaust manifold gasket going, could that REALLY cause fumes to get to the cabin? I can notice it even when I'm doing like 70-80mph, and it's very odd...