GMCtrk

iTrader: (27)

Space is definitely at a premium, but the most room would be up front by the trans. There's maybe 2" of clearance to the body at that point. It's pretty close at points on my setup, some places are as close as 1/4-1/2" clearance to the body.

BigKID

iTrader: (5)

Ahh... the heat shield! I removed mine but forgot about mentioning it. I didn't notch the bed rail though. No adverse effects thus far to the bed paint in that area.

lglowe

iTrader: (3)

The way I look at it it can't be any worse than a turbo right under the hood of my truck. I believe those put off a little more heat too ha ha. I don't think we have to worry about the bed

GMCtrk

iTrader: (27)

So KB did his thing, and welded the tailpipe back on after the underbed was notched. No clearance issues now. He also welded on a stainless 4" section of pipe that has a bit of a turndown at the end - nice touch and can be polished to a mirror finish when I get the time. The tip doesn't come all the way out, so it's got a subtle look - I like it. He also welded in a Helmholtz chamber behind the muffler which seems to have killed drone and lowered sound levels in the cab too. I was driving today and came to a stop on the highway and had to double check to make sure the motor was still running

lglowe

iTrader: (3)

Can you get a good pic under the bed. Wanna see how the notch and all turned out and with the new exhaust

lglowe

iTrader: (3)

Bump. Better pic under the bed of notch and new pipe over the axle?

kbracing96

iTrader: (26)

I didn't get a good pic of the notch before we put the spare tire back up, but here is what I got.

Jetn3

Hey KB, have you ever tried a helmholtz chamber/resonator on a straight pipe? In theory it would be like using a corsa muffler, right?

I want to run a straight pipe out back to hear turbine whistle but also want to quiet it down with the helmholtz chamber/resonator. Most mufflers kill turbine whistle.

GMCtrk

iTrader: (27)

For what it's worth, my turbo whistles big time thru the above muffler (straight thru) and the hellholes chamber

Jetn3

I would LOVE to hear a sound clip of your exhaust. Is it that much better with the helmholtz chamber? Does that helmholtz quiet it down at idle too? That's kind of weird, my 3.5 magnaflow 12909 muffler killed my turbine whistle. But then again it wasn't the diesel style muffler.