Aside from the volume difference, can anybody tell me what kind of sound differences there would be between the SLP catted X pipe and the offroad version? And the Mac catted prochamber and the O/R Prochamber? Would there be any difference in tone? Or just volume?

 

The Mac catted prochamber would be pretty deep and kinda loud.
The o/r prochamber would would be deep and pretty loud.
The SLP catted X-pipe would be loud and deep.
The o/r X-pipe would be very loud and kinda deep.

 

with an o/r X, you'll get more of a popping sound. with a catted X, it'll make the LM1s deeper and louder than stock. an H will make it even deeper and louder than the X, o/r H is self explanatory.

 

o/r H-pipe from Mac all the way. woooohoooooooo.

 

H-pipe if you are looking for sound. X-pipe if you are looking for performance. X-pipes are supposed to flow better and get better hp.

 

I heard its only about a 1 hp difference between an H and an X pipe...

 

i have Lm1's with an 0/r h and its loud.. the only thing is that it is really raspy at high RPM's .. but the performance is totally different than the stock H.. ur gonna love anything o/r

 

IDK I'd go with the catted pipe w/ the LM1's. My buddy has it on his 04 w/ and O/R H and it kinda sounds like a weed-wacker when he's just cruising and baby shifting it. You loose a lot of sound quality w/ an O/R pipe, but if you do the catted Prochamber, H or X, you get a good sound and it'll be pretty loud as it is...

 

I had cats on the prochamber before I converted to o/r, and I am very pleased with the o/r results. I wasn't too impressed with the catted version referring to sound level.

 

all i know is, for the lm2s taking the cats off made it sound friggin loud and mean. it scares the living **** out of me. i hate not having cats though, the smell without cats is obnoxious at times.