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exhaust size???

Old 08-13-2012, 05:15 PM
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exhaust size???

if i was to have an e cutout installed what size would i need? there are places I've read that its a 2.25" pipe and 2.5" pipe which is it?
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Old 08-14-2012, 02:15 PM
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Re: exhaust size???

What car?
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Old 08-14-2012, 09:53 PM
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Re: exhaust size???

wow i derped ... 2002 z28 i got under the car and im 75% sure its a 2.5 but im reading different things everywhere i ordered cutouts today.
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Old 08-15-2012, 07:08 AM
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Re: exhaust size???

Why don't you just crawl underneath and measure it instead of guessing?

-Geoff
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Old 08-17-2012, 02:10 AM
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Re: exhaust size???

if i put my cutouts before the cat when its closed will i still throw codes?
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Old 08-17-2012, 08:17 AM
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Re: exhaust size???

not enough room before the cats. and Im not sure 2 cutouts in the y pipe offer any more performance than one near the rear before it goes into the muffler.

when I had a 98 z28, the one cutout gave me between 1-1.5mph at the track. car was mostly stock, other than a lid, flowmaster muffler (in stock exhaust) + cutout, free ram air mod, ngk plugs, smooth bellows, ported maf, and 4.10's.
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Old 08-18-2012, 08:08 PM
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Re: exhaust size???

where would you recomend putting the cutout so that i get the loudest, best sound possible
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