Exhaust.....

[ob_1jr]

Originally Posted by brualex

But would there be a difference from the strait pipe to 4" if you were towing?

Not a whole lot of difference....straight pipe got real loud in the cab around 2200 RPMs. The 4" MBRP with muffler is a little mellower, but there is a resonance in the cab all the time. Straight pipe was only a little louder than stock while cruising at about 2000 RPMs (about 70 mph for me).

[Mark Craig]

04LB7,

Check out the AFE or MBRP systems, we stock them both and they are the best value going for fit finish and options like cat back, front pipe back etc etc. Call us and we'll be glad to help you on them.

Mark @ DPPI

[05_LLY]

Originally Posted by brualex

But would there be a difference from the strait pipe to 4" if you were towing?

Loosing the cat in your case will be a huge egt improverment 4'' even more since you are running a bigger program!

[04LB7]

Originally Posted by Mark Craig

04LB7,

Check out the AFE or MBRP systems, we stock them both and they are the best value going for fit finish and options like cat back, front pipe back etc etc. Call us and we'll be glad to help you on them.

Mark @ DPPI

ill check it out.......ive looked at the MBRP but ill look at AFE too.

[jeramoosh]

I like the MBRP 5in alot better then the stock strait pipe i had!

[brualex]

Originally Posted by 05_LLY

Loosing the cat in your case will be a huge egt improverment 4'' even more since you are running a bigger program!

Thanks for the info on loosing the cat. I won't be running the big program while towing and will still probably run 4" when I get the money to do so. you had asked if the Bully Dog read DTC's, yes it does. If I had to do all this all over again I think I would go with EFI live because of the almost unlimited programming possibilities. The BD was a good one for updates and all but there is no forum for help.

[duramaxdavid]

Originally Posted by 04LB7

there is no cat on my truck. came like that from chevy

We know, us LLY guys like people like you that sell your stock system

[04LB7]

Originally Posted by duramaxdavid

We know, us LLY guys like people like you that sell your stock system

well dont think ill be getting rid of it. probably gonna cut the muffler out of it sometime this week, whenever i get the chance.

[jeramoosh]

I still have my stock strait pipe system if anybody close would want it. Id give it away. Its for ext. cab short bed

[duramaxdavid]

Originally Posted by jeramoosh

I still have my stock strait pipe system if anybody close would want it. Id give it away. Its for ext. cab short bed

Your front pipe is worth about 40$ id sell it.