LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Cut out question

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Old 08-24-2004, 04:19 PM
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Cut out question

I just had my cut out installed today and it feels like i lost performance!! Is this normal??
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Old 08-24-2004, 04:50 PM
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Re: Cut out question

cut out open = no back pressure

back pressure = lowend torque

cut out open = loss of some lowend torque
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Old 08-24-2004, 05:20 PM
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Re: Cut out question

Originally Posted by '94 Bad A Z28
cut out open = no back pressure

back pressure = lowend torque

cut out open = loss of some lowend torque
Yes its normal ...
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Old 08-24-2004, 05:58 PM
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Re: Cut out question

Originally Posted by Hyperspeed97z28
Yes its normal ...


lol... Thanks, forgot to say that, hehe.
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Old 08-24-2004, 08:46 PM
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Re: Cut out question

but did i gain it back in high end
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Old 08-24-2004, 10:45 PM
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Re: Cut out question

yea you probably gained around 1-2 mph on the top end of the quarter. My et's dropped and the mph went up when I did mine, so I know a cutout is a good thing.
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Old 08-25-2004, 12:40 AM
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Re: Cut out question

yes cut out good .. but don't try to figure out your hp by adding what you think the cut out will give you and a cat back hehe...
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Old 08-25-2004, 12:43 AM
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Re: Cut out question

when i had my old 94 t/a i went low 14's@97 with just the cai, then i installed the cutout and i went 13.8@99. could of been a 13.7 if i had a helmet and et streets. what MarkyMark posted is about what you should typically expect.
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Old 08-25-2004, 01:51 PM
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Re: Cut out question

Thanks for the help guys it helped alot!
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