Hi,

Two weeks have passed since I installed my GT28 (eliminator) in my car. The first week everything was running to perfection. (Even with my Giac Flash, I'm waiting to send my ECU to REVO yet.) But still, I wasn't passing 3.5k rpms just to make sure that I don't brake my motor or something happens because of the tune. So, last night I was leaving a buddy's house and I start hearing a really strange noice from the engine. I stopped at a gas station and check the oil level, it was ok. I arrive to my house and the noise was even louder. It's like a loud knocking sound on the top of the engine. Still, the car runs great and built up boost like there was nothing wrong. Theres no leak on the motor, and I'm not getting any kind of smoke from my exhaust (no internal oil leaks/coolant leaks).

I know for a fact that my chain tensioner or whatever it's called was making some noice in the past, but not this loud... can it be the chain tensioner? Any help will help a lot!

TIA