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post #1 of 15 (permalink) Old 11-07-2012, 03:22 PM Thread Starter
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performance exhaust kit?

has any company put together a cat back performance exhaust?

had anyone replaced the front resonator with a two in one out high flow muffler?

my exhaust is knocking on the door of 300,000mi my front resonator looks like the top of a salt shaker, the rear resonator is splitting in two, its time to replace it, but i see no point in putting stock parts back on.

i did see an Intrepid in the junkyard with a "Camaro style" sideways muffler single in dual exhaust that didn't look too bad.

I'd like to find a complete exhaust or at least a parts list?

is there a difference in the fit of the exhaust between the LH body styles? 300M, 300M Special (duals) LHS, Concorde?

i have a full shop hoist, welder ect. so there is no limit to what i can do.
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post #2 of 15 (permalink) Old 11-07-2012, 03:43 PM
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Exhaust tends to be a matter of personal choice. I am running the currently no cats, front factory resonator and a borla muffler (fart can technically) that runs out the passenger side.

And I am currently debating on a complete system rework, I am looking for freer flowing / weight reduction.
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post #3 of 15 (permalink) Old 11-07-2012, 04:08 PM
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There are about a thousand combinations of pieces that have been done, but if all you want is a kid there is a company that still has them for us.

http://www.mandrelexhaustsystems.com...pid/Categories
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post #4 of 15 (permalink) Old 11-07-2012, 04:19 PM
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Quote:
Originally Posted by MelingMotors View Post
is there a difference in the fit of the exhaust between the LH body styles? 300M, 300M Special (duals) LHS, Concorde?

i have a full shop hoist, welder ect. so there is no limit to what i can do.

1998 - 2004 : all of the exhaust parts are interchangeable between the different models. Once you get under the skin, lots of parts are interchangeable.

The 300m does have cutouts in the bumper for the exhaust tips BUT that might be because the bumper hangs a little lower than the Treps or Cordes...
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post #5 of 15 (permalink) Old 11-07-2012, 04:50 PM Thread Starter
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THANK YOU! that's what I've been looking for, now to replace the resonator, i read in other posts its not recommended to use a Y pipe in place of the resonator because it will sound like crap, i don't want a fart pipe sound or an annoying drone, I'm hoping a high flow muffler in place of the resonator will do the trick?
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post #6 of 15 (permalink) Old 11-07-2012, 06:24 PM
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I call the BORLA a fart can because essentially that is what it is. Its not tin-sounding or drony, but its 2.25 in and immediately y's in to dual 3 inch
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post #7 of 15 (permalink) Old 11-23-2012, 08:30 PM
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Not aware of any kits, but seems there may be from the other posts in this thread. Why not custom build? I did, complete true duals front to rear with first gen manifolds, spun cats moved back in the tunnel to keep the engine bay cooler, and Dynomax Super Turbo mufflers. If I can hunt up a pic of the new system I will post it. Mine is 2.25 pipe with a x pipe behind the cats. You need to extend the wiring harness to your downstream O2 sensors. I also heat wrapped the manifolds and downpipes to the cats to help control heat. Running this all behind the 4.0 stroker which puts a nice cam rumble thru those dual stainless tips.
Here's a pic before the swap, where the x pipe is in this pic is where the cats are now, side by side. The x pipe just got moved back further.

"It's finally built the way Dodge should have built it."


Last edited by dodgebob68; 11-23-2012 at 08:43 PM.
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post #8 of 15 (permalink) Old 11-23-2012, 08:37 PM
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Quote:
Originally Posted by dodgebob68 View Post
Not aware of any kits, but seems there may be from the other posts in this thread. Why not custom build? I did, complete true duals front to rear with first gen manifolds, spun cats moved back in the tunnel to keep the engine bay cooler, and Dynomax Super Turbo mufflers. If I can hunt up a pic I will post it. Mine is 2.25 pipe with a x pipe behind the cats. You need to extend the wiring harness to your downstream O2 sensors. I also heat wrapped the manifolds and downpipes to the cats to help control heat. Running this all behind the 4.0 stroker which puts a nice cam rumble thru those dual stainless tips.
I kinda wanna hear this. You have a sound clip? Also Off-topic but I like your rims
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post #9 of 15 (permalink) Old 11-23-2012, 09:19 PM
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I only have this sound clip, this was still running the 2.7 before the stroker swap. I need to get up some pics of the new system and a good sound clip.
[IMG][/IMG]
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post #10 of 15 (permalink) Old 11-24-2012, 02:07 AM
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I would build a custom dual exhaust if I was getting it done, which I'm sure I will someday.

X pipe all the way, just a question of what you use paired with it.

I would also move that X pipe back and put two in line cats down there to clear room for headers, but that's dreaming.
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post #11 of 15 (permalink) Old 11-24-2012, 11:14 AM
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Wink

Quote:
Originally Posted by CaptainMorgan View Post
I would build a custom dual exhaust if I was getting it done, which I'm sure I will someday.

X pipe all the way, just a question of what you use paired with it.

I would also move that X pipe back and put two in line cats down there to clear room for headers, but that's dreaming.
Headers can be done, check out Dmondeacs thread on his stroker build, he modified prowler headers. I chose to go with first gen manifolds because from a very unscientific viewpoint they look like they flow better than the second gen manifold. I also had them shot honed to take out humps, bumps and other minor obstructions and make them a little more slippery inside.
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post #12 of 15 (permalink) Old 11-24-2012, 04:32 PM
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Quote:
Originally Posted by dodgebob68 View Post
Headers can be done, check out Dmondeacs thread on his stroker build, he modified prowler headers. I chose to go with first gen manifolds because from a very unscientific viewpoint they look like they flow better than the second gen manifold. I also had them shot honed to take out humps, bumps and other minor obstructions and make them a little more slippery inside.
Oh i know it can be done. there was a 300m guy, gollotte or something, that custom welded his own. I've done a ton of homework already on how I would build them, and welding is really the last area of fabrication for me to break in to.

I spent a bunch of time studying the fluid dynamics behind header design so I could build my own.
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post #13 of 15 (permalink) Old 01-09-2013, 11:12 PM
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I had a few different combinations of exhausts in my day. The Complete Borla cat-back system sounded the best out of the box, but is no longer available. I also liked the Camaro style Flowmaster FM80 to replace the rear muffler/resonator. Currently I still have the front resonator replaced with a y-pipe and it sounds like crap between 2500-3000 while accelerating, so I don't know what the x-pipe sounds like.
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post #14 of 15 (permalink) Old 01-10-2013, 01:54 AM
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Quote:
Originally Posted by Turbo View Post
I had a few different combinations of exhausts in my day. The Complete Borla cat-back system sounded the best out of the box, but is no longer available. I also liked the Camaro style Flowmaster FM80 to replace the rear muffler/resonator. Currently I still have the front resonator replaced with a y-pipe and it sounds like crap between 2500-3000 while accelerating, so I don't know what the x-pipe sounds like.
Turbo sighting!

I would piece together a Borla cat back system personally. They have the sexiest sounding mufflers.
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post #15 of 15 (permalink) Old 01-10-2013, 09:59 AM
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Like I've posted in a thread before, you can do a y-pipe without drone. You just need to put a muffler immediately behind it. I'll try to get a sound clip of mine. I did a custom y-pipe to a Magnaflow straight through stainless(its actually center-offset, with a S inside), and then a Flowmaster 40 at the bumper. It sounds great with no drone. I also swapped on the 2.5" pipe from a 3.2 car. At high rpm, it gets that slight rasp like a touring car has.

If you do a Y or H-pipe alone, it has a horrible drone like others have said. I took out my H-pipe because I couldn't stand it. But this configuration works. If I had to price it out, I spent $80 on the Magnaflow, $20 on the used Flowmaster, the 2.5" pipe was leftover from other cars($20-30 for a length of aluminized if you go to the right shop), and maybe $20 for some really good band clamps(like the factory ones). I also have Charger manifolds fitted but I'm sure they dont really add to the sound much.

2.7 has a 2.25", 3.2/3.5 has a 2.5" exhaust.

BTW, a well made Y-pipe makes all the difference in sound and flow. Most of the ones I've seen sold are just crap. They cut into a U or just chamber. A well made one should have the pipes going as straight as possible.

You want this


Not this


Or this

Last edited by Dirdy; 01-10-2013 at 10:09 AM.
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