Hey Andrew, do you know where I could find a write up on how to fix the butterfly screws? Going on 88k miles and haven't had a problem....knock on wood. But I'd like to fix it.


Quote Originally Posted by Nismo062 View Post
Well I can think of 2 problems that it could be. These 2 are very common mess ups with our car.

1. The pre-cat in the exhaust mani breaking apart and pieces returning into the engine.

2. The butterfly valve screws in the intake manifold coming out and entering the motor.

-Two detrimental things that can completely destroy the QR25 if not addressed asap.