Backpressure

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Apr 15, 2009 | 06:23 PM

lswon80

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From: NC

Backpressure

I'm wondering if your backpressure is off can it lead to a decrease in horsepower??

My Y pipe and I pipe was welded but I was under the car today and noticed that the I pipe and Y pipe just slide back and forth..

The weld broke.. Ive been noticing that the car seems sluggish.. Just wondering..

I dont know much about backpressure..

Apr 15, 2009 | 06:29 PM

mchdg86

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From: Tulsa OK

That **** is a myth, you don't need backpressure what so ever. I went faster with my dual cut outs open.

Apr 15, 2009 | 06:47 PM

AznMuscle

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From: Someplace Hot

Quote:

Originally Posted by lswon80

its not a back pressure issue, but a scavenging issue.

Apr 15, 2009 | 06:54 PM

lswon80

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From: NC

im getting it welded back out tomorrow so i might be back with more questions.. define scavenging issue???

Last edited by lswon80; Apr 15, 2009 at 06:59 PM.

Apr 15, 2009 | 07:37 PM

SOMbitch

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Have the muffler shop expand the Y to slip over the I and use a band clamp. Will make it much easier to work on when you exhaust is in the way. Somebody will appreciate it someday....

Apr 15, 2009 | 08:50 PM

5.slow99

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From: fenton, MO

you lose torque, i lost mine and i lost torque

Apr 16, 2009 | 07:30 AM

bigman

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i originally had true duals dumped at the axle with no mufflers, just 3 inch piping to an x pipe all the way back. i just put on some flowmaster chubbies on it. Forget about the amazing sound, the torque thats available off the line is significant enough fo me to be very happy with my purchase.

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Apr 16, 2009 | 07:43 AM

jam01

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From: south jersey. again

backpressure is not a myth, it has changed names, meaning's and i think it even had a face lift. it is present in what ever name it is called. its all about flow, (and not from mel's diner) throught you combination of intake, engine and exhaust . a break in the flow will disrupt that. just get it fixed right, and you should have no problems.