Pontiac G8 Forum banner

1 - 5 of 5 Posts

·
Premium Member
Joined
·
28 Posts
Discussion Starter #1
Hey guys I have 1 7/8 headers to 3" all they way out from obx exhaust and is to loud so I bought stock g8 muffler to quiet down abet. I want to buy cutouts would the 2.50 to 3" work for my car there from a camaro yes no ??? Would the 2.50 to 3" restrict flow ??
 

·
Registered
Joined
·
343 Posts
I have the Oval low profile QTPs I don see how they could restrict flow. They are LOUD ! mine are right after the Kook's headers ,being lowered they scrap sometimes so something closer to the back might not.
 

·
Registered
Joined
·
2,003 Posts
How much power are you making?

In general, the calculation is 2.2CFM @ 10inHg per FWHP. For straight tube, a dual 2.5" exhaust would support 513 FWHP, 3" duals 739FWHP. Each bend, resonators/mufflers can reduce conductance.
 
1 - 5 of 5 Posts
Top