Bish

I put a Borla single cat-back on my 01 Tahoe 5.3 and I definitely lost a tad off the bottom but it more than made up for it in mid and high rpms.

I like that HP/Exhaust info. Shows why they went bigger on the 6.2. I really like the sound of my stock. A bit louder would be nice but for stock it impressed me. Especially right at cold startup in the morning. Sounds real throaty

WVman

iTrader: (3)

Your right, the stock exhaust does sound good. I just want a little more from it. I kind of wonder how the stock exhaust would sound with headers and no cats.

Daryn

iTrader: (19)

like a stock exhuast.

WVman

iTrader: (3)

Funny guy! I guess I had that coming..

GMCtrk

iTrader: (27)

I think you'll like the stock exhaust once your cammed with headers and no cats. It definitely doesn't sound stock, at least on my setup. You can tell it's cammed, and it has some tone around town, but once you hop on the highway it's dead stock silent. Pretty nice.

Daryn

iTrader: (19)

to answer yer qwestion.. here... this is my old 5.3 cam header magnaflow cats. closed cutout, stock exh

http://www.youtube.com/user/cawlmedr.../5/UBCcfbvfSPs

WVman

iTrader: (3)

That sounds like what I'm looking for. What headers and cam are you running if you don't mind? I can get OBX 6.2 headers and Y for 525 shipped.

WVman

iTrader: (3)

The 5.3 exhaust isn't the same as the 6.2 is it? I thought the the 6.2l was the only ones with the 3.5" exhaust?

Daryn

iTrader: (19)

5.3........ 6.2......... my exhaust it the same...pacesetter headers, 3" y pipe

Allgonoshow

iTrader: (1)

what you do depends on your objective.
better sound--- take the resonator out of the tail pipe
ultimate performance-----3.5 inch and big tube headers
reasonable cost----- taken out resonator
good sound and performance improvement-----3" cat back, maybe headers

keep in mind, Headers make a huge difference in the sound volume of a catback.

My goal is performance without too much noise.

I have done mine in 5 stages. [ I own a shop so have the luxury of trying stuff]

1. I did arh 1 7/8 headers and their catted y pipe in the proper size tubing to fit the big oe exhaust flange and 3.5 inch tubing, at the same time
I removed the resonator from the tail pipe. This set up worked well and sounded better than stock, but had a thinny sound like a flowmaster
that I didn't care for. Baffles in oe muffler were rattling.
2. I put a 3.5 inch straight thru Magnaflow in place of the stock muffler. part #14909, sounded really good but way to loud for me.
3. added a 3.5 inch magnaflow resonator, part # 14919 in front of the 3.5 inch magnaflow muffler. this was still too loud.
4. took off all the magnaflow stuff and oe stuff behind the front flange and installed new dynomax stainless 3" catback with straight thru muffler.
sounded good but still too loud.
5. added a 3" magnaflow straight thru resonator in front of the dynomax muffler, perfection


I know sound is a personal deal and some guys would do headers, no cats and 3.5" cat back and think it sounds great.

I can definitely say that the 3 inch stuff gave me back some low rpm power that I lost with the big headers and 3.5 inch stuff.