quick exhaust question

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quick exhaust question

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Mustang >> Ford Mustang Tech >> 2005 - 2008 Mustangs >> 4.6L V8 Specific >> quick exhaust question

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quick exhaust question - 5/8/2008 6:54:05 PM

08GT4U

Posts: 39
Joined: 4/6/2008
Status: offline

i have been searching for a couple of hours now and i cant get an answer for what im looking for.first of all i have an 08 gt with bbk intake/tuner
and a 75 shot of nos.what i want to know is if i go ahead and have my shop remove the cats will i lose back pressure.i go alot to a 1/8 of a mile track by my house so i really dont want to lose bottom end, but people keep telling me that is bad to use spray with the cats on.and if i remove the cats do i have to retune my car againg.please any help on this is appreciated.by the way i dont go through emmission test.

Post #: 1

RE: quick exhaust question - 5/8/2008 9:21:40 PM

smokestang

Posts: 272
Joined: 7/15/2007
Status: offline

I dont see the giggle gas being bad for your cats ( not like its toxic or anything) as for backpressure , you will lose some, but also pick up a few hp with the O/R pipe so its really a non-issue... also you dont need a new tune for the O/R pipe...but you may get a check engine light

(in reply to 08GT4U)

Post #: 2

RE: quick exhaust question - 5/9/2008 3:05:58 AM

08GT4U

Posts: 39
Joined: 4/6/2008
Status: offline

thanks man

(in reply to smokestang)

Post #: 3

RE: quick exhaust question - 5/9/2008 6:12:17 AM

brad281

Posts: 882
Joined: 3/15/2007
Status: offline

Not sure with the nitrous, but when I added my o/r h to basically a stock car with stingers, i immediately felt loss torque down low.