Backpressure issues with Magnaflows

[JonL1]

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

[SpectorV]

keep the pipe size at 2.25 inches no more and you will have no worries

[SaturnMan8227]

I say talk to another muffler shop. You will not lose HP using magnaflows.

[sonicpony03]

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.

[slvr2000stang]

Quote: Originally Posted by SaturnMan8227 I say talk to another muffler shop. You will not lose HP using magnaflows.

Agreed.

[wiarumas]

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