Nissan 370Z Forum - View Single Post

Crash · 01-13-2009, 01:14 AM

^^^ +1 Exactly!

The car doesn't have enough torque as it is... The motor is likely already flowing exhaust as best it can as is... The same amount of air is going to flow out 3" as it would flow out a 2.5". And with 3" you lose torque because you're losing back-pressure. The only time you need to open up the exhaust is when you have MORE air coming in than can flow out at equal volume.

01-13-2009, 01:14 AM	#6 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	^^^ +1 Exactly! The car doesn't have enough torque as it is... The motor is likely already flowing exhaust as best it can as is... The same amount of air is going to flow out 3" as it would flow out a 2.5". And with 3" you lose torque because you're losing back-pressure. The only time you need to open up the exhaust is when you have MORE air coming in than can flow out at equal volume. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary