Here is for the 4'in:

https://dynamic.donaldson.com/webc/W...208&item=22390

Here is for the 5'in:

https://dynamic.donaldson.com/webc/W...208&item=22620

 

i dont seem to get any drone at all with the 5 inch straight pipe, and it sounds sweet

 

thanks buckshot!! you're alright for a pete-man.

 

Thanks buddy!

 

My 3" is straight-piped and doesn't bother me a bit. Maybe I am just getting deaf! Probably too much shooting with no ear protection.

 

i have a 96 4x4 ext cab auto cali edition eger and all that crap. however i spoke to a couple of guys out here that have done the same as me i straight piped and took all that extra crap off and has been that way for a while now with no problems. the sound in the cab you are worried about its not that bad if yur used to a loud diesel. you actually get a little more juice and looks straight piped. i drove all the way back to pocatello idaho with no problems 7 times now.

 

Pipe length has a lot to do with it. Reg cab or ext cab SB don't have problems, the LB CC crowd is another story.

AFA dropping the Cat and keeping the muffler, I did that as the first step. In the cab, not a noticeable change in tone, outside was a nice change. Finally rusted out and went to a 4". Got the drone, but deal with it.

 

straight pipe it!!! if you do not like it get a welder and put the "muffler back on"

 

Ditch it all and run a straight pipe you will like it i guarantee it

 

ive never heard any cummins with a straight pipe that didnt sound awesome