po171

Had a header leak, car was throwing po171 code (system to lean) bolts had fell out of the passenger side of my headers causing unmetered air to go in. Got it fixed and everything retightened, car is still throwing same code but runs better, gas mileage went up immediately, sounds better and...

First off heads up I’m a noob Car has a rattling raspy noise coming from the passenger side, was told it’s a header leak by a shop and two of the bolts have came out but they told me not to worry about it as it wouldn’t affect performance :) Clearly that’s not true, cars been running very...