Quote:
Originally Posted by zane  My dad has a 05 powerstroke with a 4" turbo-back straight and when it is idling the turbo is really loud like a jet. I heard that on the duramax that it will never whistle like this. I have an LBZ and was wondering if a 5" turbo back straight would make it whistle really loud like this? | yes it will whistle if you install the 5" turbo back with out the muffler that comes along.like i said i have a 06 lbz and i installed the 5" magnaflow with out the muffler that came with it and it whistled,so installed the muffler and that took care of that problem.it sounds mean with a 5" and i love it 
__________________ James
I HAVE THE MEDAL  
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. |