Ok I'm gonna pit flowmaster 40's on my car and probably gonna put a cold air intake on aswell. I was wondering if anyone could tell me how much hp this might gain me??? O ya is a 96 Mustang GT...

Thanks...

 

5

 

4 1/2. What are you thinking nanaki.

 

sorry.. you're right. i was being generous.

 

Sounds close enough to me.

It sucks man most of us come in here thinking we r gaining so many HP with our mods and is painfull seeing that is nowere evenb close to what we expected.

It sucks. Still love my stang.

 

4 minus the 3 HP you loose from the restrictive Slowmasters= 1 HP

 

i could give a sh** if i diddnt get as much hp out of flowmasters, you cant beat the sound in my opinion

 

the flowmasters do sound good, but they don't sound good above 2500rpm really.

 

My spintechs sound equal or better with less restriction to flow..........dudie

 

Do you still have the stock h-pipe on there?? If so, ditch that for an o/r or high-flow catted pipe, cuz the stock h-pipe has 6 cats on it, which is restrictive as hell...