Duramax exhaust ?

[RIDEALLDAY]

I have a 05 GMC 2500HD crew cab short bed with 143,000 miles and want to go to a 4 inch exhaust. I already have a Hypertech programmer and a K&N cold air kit. I think I'm choking it with the stock pipe and a Magnaflow muffler.
The question is which exhaust will give me more power AND mileage?
I don't want to pay for stainless.
And is there a performance difference between a straight pipe and a muffler?
How loud is a straight pipe? No I don't want one.
Thanks

[Muddy River]

I have a 05 GMC 2500HD crew cab short bed with 143,000 miles and want to go to a 4 inch exhaust. I already have a Hypertech programmer and a K&N cold air kit. I think I'm choking it with the stock pipe and a Magnaflow muffler.
The question is which exhaust will give me more power AND mileage?
I don't want to pay for stainless.
And is there a performance difference between a straight pipe and a muffler?
How loud is a straight pipe? No I don't want one.
Thanks

I hear ya on the price of stainless! I bought a 4 inch OD 1 Foot for 35 bucks!

[jeffsntx]

From what I have read and heard, I would go with Dynomax if they make what you are wanting. I have used their products on gas engines and they build an EXCELLENT product.

[RIDEALLDAY]

I hear ya on the price of stainless! I bought a 4 inch OD 1 Foot for 35 bucks!

Is it loud as crap, is it on the truck? I just ASSumed it was for a truck

Also Bullydog is around the corner from my work
Jeff, Dynomax does make a great product, Ill look into them.

[Muddy River]

Is it loud as crap, is it on the truck? I just ASSumed it was for a truck

Also Bullydog is around the corner from my work
Jeff, Dynomax does make a great product, Ill look into them.

Sorry, It's for a rear intake project on a RXT! It just insane what the market is for metals lately!

[RIDEALLDAY]

No chit

[Hypertoys]

I bought the MBRP 5" aluminized exhaust from motor back for under $400.00 . It is about twice as loud as stock and alot quiter than without muffler. It sounds like a high power gas motor and not a diesel.
http://www.xtremediesel.com/index.as...on=CARTDETAILS

[04RXP22]

Make is loud bro. Loud pipes are def the way to go. I love hearing my exhaust over the be-bopping music of the import next to me.

[jtskier11]

http://www.mbrp.com/?section=Automotive FTW!! Just get aluminized.

PS: Get rid of that pile Hypercrap.. Go Edge and never look back!

[Region8Ultra250X]

lemme work some numbers tomorrow... can get you a deal on the complete bullydog set-up for your truck