Cheap exhaust mod -- no muffler?
Thread Starter
Staging Lane
Joined: Feb 2005
Posts: 90
Likes: 0
From: SW Ohio
Cheap exhaust mod -- no muffler? After looking under my 98 Z28, I am wondering why more people don't use a "muffler delete" option to improve the sound and performance of their LS1 F-bodies? Just cut the 3" pipe after the rear axle, drop out the stock muffler and tail pipes, then run a straight piece of 3" pipe out the back where the passenger-side tail pipe used to be using the factory hanger there. With cats the exhaust tone should not be too loud. Any ideas why this is not used more?
It's used all the time. Most just cut the intermidiate pipe before it goes over the axle and weld a cutout in. That way you can be loud when you want a quiet when you don't. Oh yeah the cut-out sounds good on a factory exhaust. When it's open
I have a friend that does that to all of his camaro's, he gets them all the time, he is a used car salesman. Anyway, he just cuts the muffler off before the axle and it sounds pretty good and takes weight off and lets it flow better also, it is a great cheap mod for camaros, tas don't look really good without rear tailpipes.
Thread Starter
Staging Lane
Joined: Feb 2005
Posts: 90
Likes: 0
From: SW Ohio
The cutout is another option that many people appear to use. The down sides to the cutout are:
-- welding required
-- cost at $30 for just the cutout, cost to have it welded in, and then more cost ($190) for an electric opening version
-- the pipe is in the center of the car...this makes uncapping the cutout a "jack it up" affair.
Where I live the cats need to stay on the car for emissions testing, so with them the noise level is not bad just cruising around but is nice and throaty when on the gas. The one car I rode in that had this modification the guy called it a "Nomaster" exhaust. He felt it had the same sound volume and power gain as the LoudMouth exhaust at a fraction of the cost.
-- welding required
-- cost at $30 for just the cutout, cost to have it welded in, and then more cost ($190) for an electric opening version
-- the pipe is in the center of the car...this makes uncapping the cutout a "jack it up" affair.
Where I live the cats need to stay on the car for emissions testing, so with them the noise level is not bad just cruising around but is nice and throaty when on the gas. The one car I rode in that had this modification the guy called it a "Nomaster" exhaust. He felt it had the same sound volume and power gain as the LoudMouth exhaust at a fraction of the cost.
I deleted my muffler and put in a 3" turndown after the axle. Sounded just like my cut our, but with 35 lbs removed from the *** end of the car. Then I gutted the cats 
. Sounnds deep, but unrefined. Kinda ghetto. This is with stock manifolds, stock cam, stock Y-pipe and IM pipe.
Pics in the car folder at www.picturetrail.com/1CAMWNDR
They are the last 4 pictures in that album
.
. Sounnds deep, but unrefined. Kinda ghetto. This is with stock manifolds, stock cam, stock Y-pipe and IM pipe.Pics in the car folder at www.picturetrail.com/1CAMWNDR
They are the last 4 pictures in that album
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Originally Posted by Sandmann120
1camwndr, what turbo kit is that on your website? Please post more info.
. 
i have the hooker catback, and i was thinking of making some sort of "test pipe" that y's off and still puts the exhaust out the back. i could run the muffler when i don't want to wake the neighbors, and drop the muffler and install the mufflerless piece whenever i want to be loud.
I'm sure hacking off the muffler is cheap but I believe the
flow is probably more about those pea-shooter tubes from
the muff to the tips than the muffler itself. It would be easy
cobbling to take out the muff, after you've gone over the
axle, and get the last 3' of pipe bent in 3" and out the back.
At least it wouldn't boom your floor pan.
And I think the stock cats are more of a restriction than
the muffler. A spare set of empty shells (for test purposes
only, of course) are cheap, easy, reversible (come annual
inspection if any) and only want sims or the most basic
programming. Burring off any sharps will eliminate rasp,
I think (I have no rasp and I've been, um, testing for a
while now).
flow is probably more about those pea-shooter tubes from
the muff to the tips than the muffler itself. It would be easy
cobbling to take out the muff, after you've gone over the
axle, and get the last 3' of pipe bent in 3" and out the back.
At least it wouldn't boom your floor pan.
And I think the stock cats are more of a restriction than
the muffler. A spare set of empty shells (for test purposes
only, of course) are cheap, easy, reversible (come annual
inspection if any) and only want sims or the most basic
programming. Burring off any sharps will eliminate rasp,
I think (I have no rasp and I've been, um, testing for a
while now).