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cutout open or close?

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Old 11-27-2007, 08:37 PM
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I've personally seen a difference with the cutout open at the dyno. Open cutout on 2nd pull gave it 8hp more compared to it closed on 1st pull so it definitely helps.
Old 11-27-2007, 09:24 PM
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I have stock exhaust and gained 2 MPH in the 1/4 mile with the cut out open.

no change in the time
Old 11-27-2007, 10:48 PM
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I gained .1 and a mph and I have true duals. So they must be worth something.
Old 11-28-2007, 10:56 PM
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well ran the car tonight but was only able to do one pass,so i ran the car with the cutout closed and the car ran 13.2 @109 with a 2.2 60ft so I might be a able to do a lilttle better.next time i'll try it open and have my slp lid.
Old 11-28-2007, 10:58 PM
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need to do a back to back run
Old 11-30-2007, 03:08 PM
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Originally Posted by conde'strans
I've personally seen a difference with the cutout open at the dyno. Open cutout on 2nd pull gave it 8hp more compared to it closed on 1st pull so it definitely helps.
What kind of catback did the car have? I have a hooker catback and an open cutout only gave me 2 more horsepower.




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