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Old 09-26-2009, 01:13 PM   #1
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Backpressure issues with Magnaflows

hi,

just spoke to a guy at a local muffler shop and he told me that i can actually LOSE hp if i go with a magnaflow catback system because there's not gonna be enough backpressure. what do you guys think?

thanks
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Old 09-26-2009, 04:23 PM   #2
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Re: Backpressure issues with Magnaflows

keep the pipe size at 2.25 inches no more and you will have no worries
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Old 09-27-2009, 02:13 PM   #3
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Re: Backpressure issues with Magnaflows

I say talk to another muffler shop. You will not lose HP using magnaflows.
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Old 09-27-2009, 03:11 PM   #4
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Re: Backpressure issues with Magnaflows

Yah I agree with the above post. If you use 2.5" piping (which most aftermarket catback/converter back systems are) you may lose some torque...maybe a ft. lb. or so, but that's it. I don't think using two less restrictive mufflers will cause a decrease in hp.
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Old 09-27-2009, 05:20 PM   #5
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Re: Backpressure issues with Magnaflows

Quote:
Originally Posted by SaturnMan8227 View Post
I say talk to another muffler shop. You will not lose HP using magnaflows.
Agreed.
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Old 09-27-2009, 08:01 PM   #6
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Re: Backpressure issues with Magnaflows

you won't lose backpressure on mufflers - you lose it on the piping.
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