W-Body Custom Exhaust Build

**HighOctaneRacing** · 03-09-2014

I know there's quite a bit of exhaust threads asking which parts to get or what choices there are so I decided to draw up my custom exhaust build and add some info. There is a lot of detail lol but that's because I've been bored since I got laid off last week.

The dynomax #41806 part number for the adapter is from the dynomax kit made for our cars (19363). The size is 2 1/4 but it can be expanded if needed to fit.

You don't need to purchase all the adapters but I built it this way for quick disconnecting, especially for the mufflers so I can easily change them out for state inspections.

I recommend http://www.mandrelexhaustsystems.com because the make a solid exhaust at a decent price. They have single or dual options, 2.5 to 3 in, and aluminized steel or 304 stainless steel.

04-08 http://www.mandrelexhaustsystems.com...rix/Categories
97-03 They used to list exhausts for this generation but it seems they don't anymore or they're restructuring the site.

W-Body Custom Exhaust Build by K H, on Flickr

**machinegunsquid** · 03-09-2014

YAY informative exhaust thread!!!

**theaceofspades** · 03-09-2014

That's a sweet pic

**Nitvid** · 03-27-2014

True duals not an option for these cars? or not worth it?

**theaceofspades** · 03-27-2014

Originally Posted by Nitvid

True duals not an option for these cars? or not worth it?

If you like your ears intact and not bleeding lol

**osiris94ej** · 03-27-2014

Originally Posted by Nitvid

True duals not an option for these cars? or not worth it?

It has been done before. There is a video of a regal with true dual set up floating around YouTube.

Found it..
Supercharged 1999 Regal GS by Buick true dual flo…: http://youtu.be/WnI6sgX5rVg

Sent from my XT1080 using Tapatalk

**HighOctaneRacing** · 03-27-2014

it's been done before but I've heard true duels will scrape. Just to mod some headers to fit true duals isn't really worth the cost plus lining up the exhaust pipes under the car is going to be a hassle.

here is more info
http://www.gpona.com/forums/97-03-gr...st-t27289.html

**HighOctaneRacing** · 03-27-2014

My gf's car sounds better and louder than that and all she has is the full dynomax catback kit

**ItHurtz** · 03-27-2014

mandrel took out the 97-03 because the 04+ are the same thing. Yes I know because I have the 04+ on my 2000

**HighOctaneRacing** · 03-27-2014

That's what I figured but didn't want to post it in case **** happens for whatever reason

**HighOctaneRacing** · 09-23-2014

Just wanted to put this here as a little update.....

Dynomax Flange 41806 by K H, on Flickr

RockAuto $13.31 (you might have some trouble finding this, even in the part number search, but it's there)
Autoplicity.com $14.52
Summit Racing $14.97
NAPA $21.99

**Slick2500** · 09-23-2014

Originally Posted by HighOctaneRacing

My gf's car sounds better and louder than that and all she has is the full dynomax catback kit

Can you make a vid of it sometime? I think Dynomax was the one I couldn't seem to find or find a good video of.

**HighOctaneRacing** · 09-23-2014

She lost the whole exhaust including the zzp cat-less dp when her car got totalled. Insurance wouldn't let her take the exhaust.... mother ****ers. I'll ask her if she has any videos tho.

if you're interested, rock auto has the whole dynomax kit for $400. I got it for $300 cause I worked at NAPA lol. if you know anybody that works at NAPA they might get you a solid deal.

**theaceofspades** · 09-23-2014

Originally Posted by HighOctaneRacing

Just wanted to put this here as a little update.....

RockAuto $13.31 (you might have some trouble finding this, even in the part number search, but it's there)
Autoplicity.com $14.52
Summit Racing $14.97
NAPA $21.99

May have to buy this. I need a flange for my glasspack

**HighOctaneRacing** · 09-23-2014

Scotty has a different flange set-up he could show you. I just prefer this and it's made for our cars

**Slick2500** · 09-23-2014

Originally Posted by HighOctaneRacing

She lost the whole exhaust including the zzp cat-less dp when her car got totalled. Insurance wouldn't let her take the exhaust.... mother ****ers. I'll ask her if she has any videos tho.

if you're interested, rock auto has the whole dynomax kit for $400. I got it for $300 cause I worked at NAPA lol. if you know anybody that works at NAPA they might get you a solid deal.

Oh I didn't realize it was on that car. Yeah I saw it on Rockauto, that's why I was wondering lol. I don't know anyone who works at any of the parts stores :/

**HighOctaneRacing** · 09-23-2014

IDK if it would be cheaper to just get the mandrel exhaust systems kit and just buy the dynomax mufflers. The part numbers are 17667 & 17666. Also in case somebody doesn't know, the dynomax piping is not that ****ty crush bent garbage. It has real mandrel bends

**Scottydoggs** · 09-23-2014

Originally Posted by theaceofspades

May have to buy this. I need a flange for my glasspack

go to your local muffler shop, ask for a flange. you then cut off a inlet tube or not, and weld the flange to the glass pack.

also picked up all the parts for a u bend delete at the muffler shop. cost 25 bucks for the o2 bung, 10 inches of pipe one end flaired. and the flange.

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**theaceofspades** · 09-23-2014

Originally Posted by Scottydoggs

go to your local muffler shop, ask for a flange. you then cut off a inlet tube or not, and weld the flange to the glass pack.

So I don't need to cut off the inlet tube
Also by your pic it looks like gm sold me the wrong exhaust gasket. So that's awesome

**Scottydoggs** · 09-23-2014

nope. you can weld the flange to the pipe. i cut mine off to make it 2 inches shorter so it would fit right.

i measured my stock res, bought a gp a bit longer res was 30, gp 32".