Why X-pipe? on 1990 5.o w/ AOD

918 Views 4 Replies 4 Participants Last post by Biggin, Jul 17, 2011

Biggin

Discussion Starter · Jul 16, 2011

i have a 1990 with stock 5.0 that has all the heater core and all the pluming that is included in it and no smog pump and no a/c. i have 2.5in dual exh. with some flo pro mufflers. i have had people tell me that i need to run a crossover pipe, either an x or h. what is the reasoning behind this. i always thought that the better your car can breathe the better it run. (intake and exhaust) let me know what you think.

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skarudy930

· #2 · Jul 16, 2011

An x or h pipe will help your car breathe better. It helps the exhaust flow out of your engine more freely. However, neither will make a noticable difference unless you get them without cats (off road a.k.a. o/r) and a tune as well.

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fastfoxowner

· #3 · Jul 16, 2011

skarudy930 said:
An x or h pipe will help your car breathe better. It helps the exhaust flow out of your engine more freely. However, neither will make a noticable difference unless you get them without cats (off road a.k.a. o/r) and a tune as well.

I totally agree! I have a '90 gt with off road x-pipes, super 44's, no cats and they dump off just before the rear axle. go with a x-pipe if you like a raspy sound and a h-pipe if you like the old hot rod sound. You may also wanna add long tube headers. Check out youtube and listen to some examples.

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notchbackfox

· #4 · Jul 16, 2011

only 1 prob with that long tubes wont fit on AOD

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Biggin

Discussion Starter · #5 · Jul 17, 2011

i havonly 2.5in pipes that run rom headers to mufflers amd then dump before the rear end. sound is not the issue. its if the air has to be equilized when it comes out of the motor in order to keep that backpressure equil.

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