QTP 2.50 TO 3 oval cutouts - Pontiac G8 Forum: G8 Forums - G8Board.com
Exhaust Tech Headers, Catbacks, Mufflers, lack of mufflers

 
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post #1 of 5 (permalink) Old 03-25-2017, 01:00 PM Thread Starter
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QTP 2.50 TO 3 oval cutouts

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 ??
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post #2 of 5 (permalink) Old 03-25-2017, 01:47 PM
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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.
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post #3 of 5 (permalink) Old 03-25-2017, 03:35 PM Thread Starter
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Ok thanks!!! Restrictions on the flow because of the 2.50 to 3"!!
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post #4 of 5 (permalink) Old 03-25-2017, 04:22 PM
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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.

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post #5 of 5 (permalink) Old 03-25-2017, 04:25 PM Thread Starter
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Haha nowhere near 500 !!! Ok then I should be good thanks for the quick reply guys
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