Chevy and GMC Duramax Diesel Forum - View Single Post - Exhaust Question

**TYREBOYZ_DEMAXIN** · 08-29-2007, 05:36 PM

heres some food for thought but i noticed when i had the 5" on my LLY and then switch to the 4" my EGT's dropped a little and the only thing i could come up with is that with the bigger pipe it would loose volasity and then kinda roll around in the pipe leaving more heat in instead of shooting out the back(hope that made sense)so i would highly recommend the Silverline or MBRP 4" SS 304 is the best but if you only drive in some salt go with the 409SS..

08-29-2007, 05:36 PM	eBay Motors #4 (permalink)
TYREBOYZ_DEMAXIN Diesel Addict Join Date: Feb 2007 Location: Barnesville OH Posts: 6,862	heres some food for thought but i noticed when i had the 5" on my LLY and then switch to the 4" my EGT's dropped a little and the only thing i could come up with is that with the bigger pipe it would loose volasity and then kinda roll around in the pipe leaving more heat in instead of shooting out the back(hope that made sense)so i would highly recommend the Silverline or MBRP 4" SS 304 is the best but if you only drive in some salt go with the 409SS.. __________________ James Priority List God Wife Her Car Work Car then the Truck