exhaust suggestions

goatboy0067 · January 24, 2013

the exhaust is in need of replacing on my truck i know the exhaust that is on there is not right i have true dual (no y pipe) it is 3" all the way back to the muffler. the muffler has a 2 1/2" inlet and outlet (2 seperate mufflers) then i reduces down to 1 1/2 in tail pipes with 4 in tips. any suggestions on size and brand. would like muffler and tails would like to keep the dual. and any reason why they would have used such restrictive pipe none of the hangers line up with factory.

kstruckcountry · January 24, 2013

Look into Magnaflow or MBRP systems, they have some really good looking and sounding ones.

Chris · January 24, 2013

I love the MBRP on my truck. Nice at cruising, its quiet but you still hear it a little. Absolutely no drone. At WOT the sound will turn you on

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goatboy0067 · January 24, 2013

i cant find one on mbrp's website that will fit my 01. what is the tail pipe size on a stock 01 with an 8.1? what are some of you running for size. i know mine is not right at 1.5 in.

Chris · January 24, 2013

I am not sure. I have the 5.3 system on my 6.0

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Big Whiskey · January 25, 2013

I wonder why in the heck they put 1.5" pipe on an 8.1 engine?!?

For the HP range of a stock 8.1, either a single 3.5" system or a dual 2.5" system would be just fine.

ATMINF · January 26, 2013

The stock 2500HD systems for the 8.1 or 6.0 gasser are dual 3" systems that feed into a single muffler that then has a single 3.5 outlet.

goatboy0067 · January 26, 2013

i know i dont know where i would find an 1.5" exhaust unless it was custom. i was looking at a 4" setup i wonder if i could use a diesel tailpipe if i could find a muffler with dual 3" inlet and single 4" outlet the diesel tail pipe is much easier to find. thanks for the input.

goatboy0067 · January 28, 2013

does anyone have the 4" single exhaust from flowmaster? i also saw heartthrob had a 4 " system. any thoughts?

dewfpo · January 28, 2013

does anyone have the 4" single exhaust from flowmaster? i also saw heartthrob had a 4 " system. any thoughts?

That's HUGE for a street gasser unless your at the drag strip cranking serious RPM's. For everyday driving I would think that it would kill your low end. But I'm no expert with a dyno.

DEWFPO

goatboy0067 · January 28, 2013

really there is dual 3" into the muffler and a single 4 out. i think it was 3.5" from the factory. again i do pull a 16' job trailer and a skid loader so its not just a driver. also i have a autocal so ill have it tuned after install.

kstruckcountry · January 28, 2013

The MBRP cat back I was looking at before I decided to do just the muffler was 4"

hzhardy · January 30, 2013

i have a gibson metal mulisha exhaust that is 4" and i love it. I did have to change the tip as it just looked to obnoxious with the skull

goatboy0067 · January 31, 2013

any one have a dynomax system ? i can order a ss cat backsystem from autozone for 250.00.

Gleason_88 · February 12, 2013

i gotta 01 gmc with 6.0 gasser auto an i put 3inch flowmaster race mufflers an 3 inch pipe from the manifolds back all the way to the rear bumper dual exit out the side an it sounds amazing but it is pretty loud