hell yeah man! i love crossin through water, just knowin my rig goin through some deep **** is so cool

 

Removal of or hollowing out your cats is a violation of federal law and banned on this forum. There are a lot of vendors that sell high-flow cats that can be welded in place.

Regarding running without a muffler, there are various requirements in various jurisdictions. Some require the exhaust to be dumped outside of the cab, so you must run it all the way back. Others state that all vehicles must be affixed with spark-arresting mufflers, such as national parks run by the Forest Service.

Do a 3" stack above the roof line.

 

3in stack above roofline? on cherokee? pics?

 

Back pressure is a myth. Period.

Its exhaust velocity you want, removing the muffler won't effect it.

As Salad mentioned, discussion of the removal of emission equipment is not permitted.

 

Can't find that other build thread where the guy runs it up behind the rear wheel.

 

thats so stupid lookin

 

Its in the "chop top on the cheap" thread that keeps getting slammed in the fab section. I can't link it on my phone haha

 

lol first one I could find

Yeees that's it

 

Lol I heard that I just like seeing if my rig can do it

 

Hmm, that's not the one I was thinking of, but that works!

 

I think the guys name was oxen or something.

 

I just buy cheap thrush glass packs for like 25 a pop at parts store. Tones it down enough that i do not set off car alarms taking off from stop signs!

 

for what other reason would you straitpipe your xj then? lmfao

and yeah that last pic with the exhaust comin out and up the back window looks official
im just gonna saw off the muffler and replace it with pipe

 

there is far more restriction in the cat than what's in the muffler

it will be fine. and basically any engine u deal with that has more than 5 cylinders won't be noticeably affected by no back pressure.

 

My brother-in-law had a cat split open, due to rapid cooling, when crossing water