H-pipe? Power?

[custom89stang]

I am getting an Off Road H-pipe from Jegs. I was wondering how much power its gonna add. My car has fenderwell cold air intake and flowmaster 2-chamber cat back exhaust out back. Thats all. Was wondering if someone read something on how much power it would add to a mustang thats pretty close to stock? has the same setup? Thanks for your time.

 

[mr.nitrous]

Its really not going to get much more power a few hp if your lucky, its going to make your car louder though. Have fun with it, there easy to install.

 

[custom89stang]

I am getting an Off Road H-pipe from Jegs. I was wondering how much power its gonna add. My car has fenderwell cold air intake and flowmaster 2-chamber cat back exhaust out back. Thats all. Was wondering if someone read something on how much power it would add to a mustang thats pretty close to stock? has the same setup? Thanks for your time.

Thanks mr. nitrous! Anyone else got any other comments?

 

[Black331Stang]

about 50-60 HP at least. its the biggest bang for the buck.











haha JK
maybe a few HP ditching the cats and going to a mandrel bent piece. but the biggest change will be in sound. louder and meaner.

 

[v8only]

agreed, unless your stang is heavily modified, the factory exhaust is plenty. You won't notice a damn difference in power, but the sound alone justifies the cost. I ditched my off road pipe for a stock catted piece, and I really miss the sound.

 

[Black 93 Fox]

I put a mac off road h pipe on my car with 40 series flows. After putting it on it sound much much much better and alot louder its got a good mean throat now. You will really like how it sounds after. Enjoy it

Also something to think about keep that stock h pipe for emission purpose's

 

[siege]

well that's a bummer, mine didn't get very much louder (not as much as I would expect) when I put mine on...of course my full system sounds a lot quieter than I think it should..oh well, sounds badassed at WOT

 

[blk306]

With the increased flow and stock motor, you're going to loose some low end torque due to the lack of backpressure but gain a few HP in the upper R's. The sound is AWESOME! I didn't notice the low end loss until I put my cats back on for emissions, back when I was N/A.

 

[Black 93 Fox]

Doesnt the backpressure depend on what size pipes he has?

 

[siege]

the bigger the pipe, the less backpressure obviously, but no matter what size, you're going to lose some backpressure cause cats are decent restrictions. but there will definately be a loss of torque though. however, I think the high end gain is worth it. the stock H is a dog above 4k, offroad H is much nicer all the way up

 

[blk306]

That too as well as the number and quality of bends in the pipe. In this case, a straight pipe, H or X w/o cats, will greatly reduce the amount of backpressure thus reducing the low end torque, which is noticeable during around town driving.

 

[siege]

yeah torque loss is definately noticeable...I miss it. wish I could get some more decent mods, but money sucks, so I just stick to giving it more gas

 

[blk306]

Yeah but the sound makes up for the torque loss.

 

[91lxntch]

well from expierence's ive seen that it will add a few ponies..it is lighter than a stocker mandrel bent as well bigger diameter...it will help rev's and the motor breath easier ...and sound great to

 

[siege]

now if only it was legal...hate putting that stocker back on, such a pita (one of the mounting pipes or whatever is bent so it takes a lot of effort to get on and off ) seriously though, I've talked to a few people that can pass emissions with flying colors with offroad H's (not to mention blowers, etc), so I don't see why they should be able to fine us for it..lame

 

[Kurt2002]

I have the Flowmaster 3 chamber mufflers, will the O/R H-Pipe make it louder and will it drone like 2 Chambers with the O/R pipe?

 

[blk306]

I wish I could pass emissions with my H but I can't even stand behind my car when it's running with Cam2 in there.

 

[siege]

yeah, it'll probably drone. when I had my 3-chamber flows it would drone nicely at about 1800-2000 rpm. but then again, every car is different

 

[67coupe]

Kurt2002

Depends on which 3 ch flows you have. I have the delta's. Very little drone at 1800-2000 rpms.

If you have the old 3 ch flows, you will have a noticable drone.

 

[HaggardGT]

MAC PROCHAMBER! Most badass sound and largest power gains over stock. 'Nuff said.