ok im a little confused....

[Srt2Stang725]

I have an 07 mustang gt and im debating on either an H or an X pipe...i will probably go with a stainless version of pypes h or x. My first question is, should i go offroad or cats? number 2 is if i do go offroad do the cats just unbolt from the headers or do they have to be cut off? number 3 if i go offroad do i need to buy mil eliminators or can i use my SCT Xcal 2 to turn off the no cat check engine lights....and number 4 (lol sorry im a newb to this car) do i need to tune again with an offroad x or h? Thank you all in advance and sorry for the long and newbasaurus post

 

[tungsten07]

1: Offroad or keeping the cats really depends on you. If you don't have a problem with having to put them back on again than by all means go for it, that's pretty much the only way to see a hp gain from the exhaust (the stock exhaust flows extremely well).
2: That depends on what kind of exhaust you go with. A lot of off road h/x-pipes require you to cut the cats out to bolt up the new pipe. Also, more than a few such a the one I have (bassani modular x-pipe) don't require you to cut anything.
3: Most sct tuners such as bamachips and brenspeed turn off the cats by default when they ship out their xcal 2.
4: Last but not least, no, you should not have to retune your computer it's not that signifigant of a change that would require a reflash.

 

[Srt2Stang725]

thanks dude!

 

[ranger04]

Whats the difference between the the X or H pipe besides shape, which is better?

 

[Towelly]

Srt2stang25, You can use your SCT to turn the rear O2's off. Also you shouldn't have to cut your cats off because the cats are part of the stock mid-pipe which you would be replacing with the pypes version you choose.

Ranger04, For performance purposes either an X or an H will net you about the same amount of horsepower, but they sound totally differen't. That is the main difference, otherwise its just a matter of opinion.

 

[kooldawg6]

X pipe is better suited with straight through muffler(or no mufflers)and produces a raspy sound.
H pipe is better suited for chambered mufflers and produces a deeper more muscle car sound.

 

[DarkFireGT]

Off-road H plus chamber style muffler FTW! Kool is right.

 

[lightblade]

Srt2stang25, You can use your SCT to turn the rear O2's off. Also you shouldn't have to cut your cats off because the cats are part of the stock mid-pipe which you would be replacing with the pypes version you choose.

Ranger04, For performance purposes either an X or an H will net you about the same amount of horsepower, but they sound totally differen't. That is the main difference, otherwise its just a matter of opinion.

How do u turn off the rear o2 with the sct xcal-2 i cant seem to find that option

 

[tungsten07]

with the newer xcal's YOU can't. the need to be pre-programmed with that option. from what I hear the older ones had the ability to turn them off by the end user but not any more. like I said though most tuners turn them off automatically even if you don't request it.

 

[DarkFireGT]

How do u turn off the rear o2 with the sct xcal-2 i cant seem to find that option

This must be done by the tuner. Bamachips and Brenspeed both turn them off with every tune.