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Old Apr 15, 2008 | 12:05 AM
  #1  
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Question E-Cutout Input

Ive had my e-cutout for almost a year now.
Ive noticed that...
1. It seems to take up more gas.
2. It seems to slow the car down.
Ive had my cutout closed the last couple of days and the car has ALOT more HP.
Is it just me? Are other people having this issue?
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Old Apr 15, 2008 | 01:37 AM
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Back pressure?? i don't feel much of a difference when the cut-out is open on my car, just loud.
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Old Apr 15, 2008 | 08:04 AM
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Umm, im thinkn this might be just you. You should not be loosing power, maybe not gaining anything noticeable. but not really losing.
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Old Apr 15, 2008 | 08:37 AM
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could be a lot of things so i'll list the obvious ones. cutouts, because they reduce back pressure, hurt low end torque (not a lot, but noticably). if you've had the car tuned with the cutout closed, running it open can mess with your fuel trims causing you to run rich (this is more of an FI problem tho).
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Old Apr 15, 2008 | 01:18 PM
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mine "Feels" faster with the cutout closed too...but the dyno says otherwise. im talking 8-10hp difference from open to closed.
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Old Apr 15, 2008 | 01:32 PM
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I think Im going to have to talk to our car clubs tuner and see what he says.
Ive had both a street tune and dyno tune before I had the cutout installed.
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Old Apr 15, 2008 | 02:45 PM
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I have logged "Delivered Torque" and seen no difference
open / closed to about 5000RPM and then the open is
good for some lb-ft upside. If you have cats and the
cutout is aft, that's probably still true for you. The more
of the exhaust you bypass the more you gain.

Some of it psychological, you expect more go with more
noise and when it's slim or none it feels like it's negative.
You have to go by the numbers.
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Old Apr 15, 2008 | 08:47 PM
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Originally Posted by TXws6
mine "Feels" faster with the cutout closed too...but the dyno says otherwise. im talking 8-10hp difference from open to closed.
Very true!

Zoegirl, it's just all in your mind!
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Old Apr 15, 2008 | 09:03 PM
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Originally Posted by jimmyblue
Some of it psychological, you expect more go with more
noise and when it's slim or none it feels like it's negative.
You have to go by the numbers.
ditto

when my cutout is open its loud as **** so it sounds like im giving it more gas than i really am, which makes me think its slower.
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Old Apr 17, 2008 | 12:58 AM
  #10  
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Im gonna meet with our car clubs tuner this Sat. morning at Az. dyno chip.
He doesnt think there should be any kind of a problem but he said he would check it out.
So well see!


Also, do any of you think your cutouts take up more gas when its open?

Last edited by Zoegirl; Apr 17, 2008 at 01:07 AM.
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Old Apr 17, 2008 | 07:22 AM
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Originally Posted by Zoegirl
Im gonna meet with our car clubs tuner this Sat. morning at Az. dyno chip.
He doesnt think there should be any kind of a problem but he said he would check it out.
So well see!


Also, do any of you think your cutouts take up more gas when its open?
Yes, only because I like to hear the sound in the upper RPM's so I romp on it a little more. Down low my car "feels" faster with the cutout closed as well. I prefer it open though .
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