Was driving my truck around and I don't hear any flutter from my wastegate. I looked at my vacuum and it looks good also I am boosting. I feel a loss of HP as well. My thoughts are that the wastgate may be stuck or something causing the loss of power but allows boost and vacuum.
Also I have codes on bank 1 and 2 stating that the knock input is low. Any suggestions on any of this? was going to do a wastegate vacuum test tomorrow. Thanks fellas

 

Stuck wastegate would more than likely cause overboost.

 

How does "overboost" effect my performance?? Thanks

 

if you have a knock sensor code it is going to pull timing. pulling timing will lower your power. get the code erased and power should come back unless the code comes right back. need to figure out what wrong with the knock sensors. make sure there not unplugged.

 

Ok will do, thanks for the help.

 

+1, especially when it comes to making sure the sensor isnt unplugged or damage/missing/etc.

 

Its not your wastegate. If it was stuck closed you'd overboost (too much boost) and eventually blow your engine, if it was stuck open you'd see no boost at all. Do what 4.8T and turbosilvi suggested.

 

Are you talking about your Wastegate or your BOV....

 

My wastegate. I don't think the knock sensors would be affecting my wastegate, thats a different issue all together assume.

 

I was thinking like silvermodo. A flutter is usually more associated with a BOV.

sounds like knock sensors are you problem. Porbably need to change thte sensors and the little harness that goes to them.