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Old Mar 11, 2011 | 09:02 AM
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Default cutouts behind headers

hey guys i got 1999 camaro shafiroff 383 ls1 running thru a factory slp muffler with kooks headers off road pipe putting 2 cutouts wondering what i can expect as a gain with them open
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Old Mar 11, 2011 | 11:42 AM
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You can run our Low Profile Oval Cutout on your y pipe. But there is not much of a gain when running 2 vs 1 on the intermediate pipe. The only time the difference would be great is when the Y pipe has a less than favor merge. With a Kooks y pipe you will not have that problem.
If you have any questions feel free to call us.
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Old Mar 11, 2011 | 12:14 PM
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I have my cut outs right behind the headers. Seemed to me to be the best place for them for racing. Plus it makes it so loud right underneight you. lol
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Old Mar 11, 2011 | 04:24 PM
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I've seen dyno results where you actually lose some power with dual cutouts. This was on a heads/big cam setup

Maybe someone else can chime in
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Old Mar 11, 2011 | 05:08 PM
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I saw a 7 hp gain and only have one cutout located after the pipes coming from the longtube headers merge somewhere under the passenger seat.
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Old Mar 11, 2011 | 06:35 PM
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you loose power on the dyno but you get it back at the track...
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Old Mar 12, 2011 | 12:16 AM
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thanks for the feedback ya i cant see it losing power we will see
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