[MoneyMike02GT]

i have a 2000 mustang gt with o/r x and flowmasters. i want my car to be louder so i have a question. would any of you cut the cats and run straight pipes with no converters all the way back. no converters what so ever. do you know if my car would have the same tone it has now and just be louder or it would it be just some shitty sounding tone? also would this cause an increase in power or just noise?

[02steedagt]

dude, if you have an o/r (off road) x-pipe, you don't have any catalytic converters.

if you want louder, get yourself some long tube headers and maybe like a BBK x-pipe and a set of magnapacks to replace those shitty flows.

[putermech]

Actually he probably does have them. 1 on each side instead of a pair on each side like in the stock cats. BBK had hi flow convertors for both X and H which match up with there long tube.

BTW you want some sort of back pressure or you will lose horse power and may even not run at all. That's why you find senors on the intake as well as exhaust all talking to the PCM.

H pipe is louder with less horse power and torque. This has to do with the excape of exhaust pulsing threw the pipes during firing. Like water...it takes the path of lease resistes and doesn't want to turn 90 degrees but rather run on by. Where X pipe passes both sides which gives even tone.

For really loud exhaust, the SLP LM1 and for a deeper tone, the LM2.

BBK long tube (ceramic) with X-pipe (MILs) and SLP LM1 (modular) probably be the loudest and legal stang exhaust on the market.

All above for around $1200 and 25-50 hores.

If you don't use converters...then maybe add spark plugs at the end of the pipes with coilpack and switch...that way you can burn a pretty sweet flame on anyone tail gating you in traffic.

youtube.com has tones of videoes. So you can see for self.

[02steedagt]

Originally Posted by putermech Actually he probably does have them. 1 on each side instead of a pair on each side like in the stock cats. BBK had hi flow convertors for both X and H which match up with there long tube. BTW you want some sort of back pressure or you will lose horse power and may even not run at all. That's why you find senors on the intake as well as exhaust all talking to the PCM. H pipe is louder with less horse power and torque. This has to do with the excape of exhaust pulsing threw the pipes during firing. Like water...it takes the path of lease resistes and doesn't want to turn 90 degrees but rather run on by. Where X pipe passes both sides which gives even tone. For really loud exhaust, the SLP LM1 and for a deeper tone, the LM2. BBK long tube (ceramic) with X-pipe (MILs) and SLP LM1 (modular) probably be the loudest and legal stang exhaust on the market. All above for around $1200 and 25-50 hores. If you don't use converters...then maybe add spark plugs at the end of the pipes with coilpack and switch...that way you can burn a pretty sweet flame on anyone tail gating you in traffic. youtube.com has tones of videoes. So you can see for self.

he said he had an OFF ROAD x-pipe. that means he does NOT have cats. true about the high flow, he might have that but that's not what he said. and NOT true that the car wont run at all without backpressure and running lower backpressure deosn't exactly make you loose power, you might loose a little low end torque, but your top end will be better.

-oh and if he has a bbk o/r x-pipe, he is NOT LEGAL.
-get the SLP LM 2, the 1's are shit.

[cliffyk]

My '03 GT came to me with an o/r H and Flowmasters--it was so loud that it was embarrasing, as it was advertising something it didn't have. Stock GTs are reasonably quick, but they are not THAT fast.

I'm running a catted X (UPR) now, with Magnaflows and I find it to be just about the right balance between what's being advertised and what can be delivered...

[Richs96]

Kinda off the subject here but were do you get a shifter like the one you have as your picture? Is it a short throw like the tri-ax or just a stock replacement?

[cliffyk]

It's an MGW, with a custom decorative boot...

[rk_2000_Z/28]

My bud has 3" MAC exhaust on his '02 GT with an off road x-pipe and it is loud! I can tell when he is on his way over to my house before he even turns down the block (absolutely NO exageration there)...and it sounds pretty freaking bad ass too!

[zkid01]

Originally Posted by 02steedagt dude, if you have an o/r (off road) x-pipe, you don't have any catalytic converters. if you want louder, get yourself some long tube headers and maybe like a BBK x-pipe and a set of magnapacks to replace those shitty flows.

+100 this is one of the loudest ive heard, with a good tone. Pypes is also pretty F* loud.