LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

dynomax catback for GXP??

Old 12-01-2010, 03:47 PM
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Default dynomax catback for GXP??

did we know about this? i just seen it in my new summit catalog. summit Pn# WLK-19363 for $385.95 thought it was a good deal. think im gonna go with a Dynomax bullet with stock cats and some tips from Pypes, of course with the tune and DoD delete
Old 12-01-2010, 04:44 PM
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Interesting, I'd like to see how it sounds!! Seems like a good deal, wonder how it performs?
Old 12-01-2010, 05:15 PM
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i was wondering the same thing, very good price compared to the magnaflow
Old 12-01-2010, 05:54 PM
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Honestly though the piping isn't any bigger diameter than stock, the resonator doesn't make/loose any power, and the split doesn't look any better than stock so unless your system is getting rusty and needs replaced, I'm not seeing any advantage in installing that system versus having your stock mufflers replaced with Dynos and putting new tips on.

Now if it was a 3" intermediate pipe into dual 2 1/4 or 2 1/2 after the Y, I could see that. Too bad too because I really like dynomax and it'd be great to have an off the shelf system from them that was what I wanted. I'm probably still going to use their mufflers in a custom system this spring, had a couple sets on previous cars and got lots of compliments on the sound.
Old 12-01-2010, 07:07 PM
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That is a nice price! Have to look up a 2005 Grand Prix to find it.

Part Number: 19363
Description: DynoMax - Dual - 2.25" / 2.5" system. Dual 4" tips. Super Turbo™ Muffler

Year: 2005 Make: PONTIAC
Model: GRAND PRIX - Engine Size: 5.3L - GXP Model

If that's an accurate image, I'm not too fond of the tips. Also, you lose the quad tips (yes 4" quads will fit the GXP).

http://www.dynomax.com/part_view.php...363&engine=5.3

The PDF lists it for the 3.8L. Weird.
Old 12-01-2010, 08:05 PM
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Looks like the basic layout for the LS4 routing. Maybe v6 exhaust is close enough to make work?
Old 12-01-2010, 08:10 PM
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as I recall, the consensus from a few years back is that the V6 exhausts fit with only very minor modification of some mounting points and trimming. Pretty much anything for a V6 W-body can be made to work.
Old 12-01-2010, 08:38 PM
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I had a dynomax catback on my 1989 firebird formula way back in the day and it sounded really nice. I have heard dynomax on a LT1 Z28 as well and it was nice too.
Old 12-02-2010, 04:44 AM
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have a set of ss Ultra-Flo's on the Impala (stock pipe, no resonator) that does not sound too good in the crappy video's I have, but I get remarks on how good it sounds from strangers and friends alike when I get on it.
Old 12-02-2010, 05:48 AM
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dont forget about the slp exhaust
Old 12-02-2010, 06:09 AM
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the v6 exhaust should fit with no problem well at least it did on my car when I was thinking about buying my friends off his 97' GP.
Old 12-02-2010, 07:35 AM
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they actually list 2005 gp gxp as one of the vehicles this kit fits
Old 12-02-2010, 10:47 AM
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94ss06gxp,
1. What tips are you going with? I need 3 inch inlet and can't find any.
I have 3 inch ultra flows but they won't go on until spring.
2. From your christmas thread, any good hunting ground up your way, been looking to get out of IN to do some good hunting.
Old 12-02-2010, 11:08 AM
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Originally Posted by indynotch50
94ss06gxp,
1. What tips are you going with? I need 3 inch inlet and can't find any.
I have 3 inch ultra flows but they won't go on until spring.
2. From your christmas thread, any good hunting ground up your way, been looking to get out of IN to do some good hunting.
1. i am going with these most likely http://www.summitracing.com/parts/JEX-PRS600SS/
2. those pics were takin at my parents where i store the camaro. around there its all corn fields and not too many deer. but my GF's family owns property west of the town i live in and its all woods and they get nice deer every year, her brother got a huge 9 point the other day and someone else got a 5 point and her dad got a 6 point.
Old 12-02-2010, 09:20 PM
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I have a custom 3in from cat to 2.5in Y to the mufflers, an my mufflers are Dynomax Super Turbo's. They sound....... eh...... oooooook. Im not happy.

But they are there cheaper style muffler. I got them at a swap meet and they were for a 78 camaro with a dual kit from dynomax. Anyways its like a super deeeeeep bass. Hard to explain some people like it but i dont. Doesnt have the rumble or muscle car nastyness im looking for..

But like I said the super turbo's are eh ooook.....
Old 12-03-2010, 03:20 PM
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i want the dynomax bullets


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