StrokerAce
Smooth Is Fast
- Joined
- May 21, 2006
- Messages
- 174
I just put a single 6 inch stack on my truck and have been running the Looney Tune which sounds great and get a good loud whistle. I wanted to see what my Xtreme Race file sounded like and it didn't sound as good as my Looney Tune did so I put the Looney Tune back in. After loading the Looney Tune, I noticed that it sounded like the VGT control valve was acting up. It will go from a good loud whistle and then the whistle will start to fade and then go completely out. When it goes out, all I get is a deep rumble of the exhaust. After about maybe 1 min., the whistle will start to come back and then it will gradually come back nice and loud. It will stay for around a min. and then the it will start all over again. I put the stock tune in and it sounded fine and it sounded fine on the Xtreme Race tune. I have even reprogrammed the truck 3 times with the Looney Tune and it still does it. Before taking it out, it ran like a champ now all of the sudden it's doing this. Does anyone have any ideas as to what could be going wrong?