[user name:]

we have a 99 7.3l and have it hopped up a bit. this is our lease/work truck and doesn't get on the road. well we have thought about chopping the exhaust off and running just 3.5" straight pipe. would i benefit from just dumping the muffler? or is the cat a big restriction too? right now the truck has a custom 6 pos. 140hp tune and intake but we run it on the 80hp tune as it feels like it makes the best power. is the cat on these trucks a big restriction?

 

[cumminstexas]

Chop it in front of the cat add alittle straight pipe and then just use the factor tail pipe to exit in front of the rear tire fab up some hangers done and done...that is if you're looking for ghetto and cheap/free.

 

[user name:]

yup thats what im prolly gonna do! but do i need to get rid of the cat? will it help alot?

 

[razocow]

If it is a leased vehicle, modifying the emissions equipment might violate your lease agreement.

But those cats rob flow, rip it off

 

[cumminstexas]

If it is a leased vehicle, modifying the emissions equipment might violate your lease agreement.

But those cats rob flow, rip it off

I BELIEVE, but I'm not sure that he meant like Deer Lease or oil well lease...I would take the CAT off they do rob alot of flow and hollowing them out is a PIA so yeah cut it off

 

[user name:]

not worried about a lease agreement. its our land, I call it the lease cause we lease it to other hunters as well. lol...

 

[ttitus]

Cut it off get a 5" 36 in miter cut stack, 5" felxible exhaust tubing, expanders, strap clamps and a piece of iron you shape into a hanger and weld to your frame(we use a guillotine clamp on these to hold in position) I have put this same set up on a number of 7.3 its cheap easy and looks really good.

 

[user name:]

we toyed with the idea of using this extra duece n a half exhaust stack and intake and running both out the right side of the engine bay

 

[pa coal roller]

just buy a 5'' exhaust form ebay it like 2xx bucks

 

[user name:]

been looking on ebay the only 5" systems i see are like 450+