Originally Posted by tony tone

it sounds like there something wrong by the shock tower or a bushing loose or something. anytime i gun it (1st,2nd,3rd gear) and let off its a hard POP on my side as if the damn shock tower is going to pop through the hood. a simulation of this is if you would just hit a pot hole in between shifts.

i took it to the dealer and they show the driver's side motor mount destroyed, but i don't think that's what's causing this. even though i can agree with them on the motor mount as i feel vibration everytime i turn on/off the car and let off any gear slowly, but this just sounds totally different. i even hear the same pop if i go over a speed bump and land down.

any ideas?

thanks guys.

Tony

Originally Posted by 92nsx

NO way, maybe another 100-150, but OEM LS6 would go BOOM. The compression ratio is way to high for a boosted engine. 5-6 lbs, max. And hope to hell you dont get denotation, even at 5-6 lbs. Any more boost you will have to run straight 110 octane to prevent it from pre-denotation.

Turbo engines have low compression ratio for a reason

The biggest problem I have with my 7MGTE (supra) is blowing out the spark at high boost. I think im down to 22 thou on my plugs for high boost.