GTO Flowmaster
12-10-2006, 10:37 PM
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GTO Flowmaster one of my friends bought the 40 series flowmasters off of pfyc.com made for the gto and he took them to a local muffler shop and they said that the mufflers wouldnt fit on the car... so i was wondering if anyone had a picture of the undercarriage of their car to show where the mufflers should go in at.... or any help would be appreciated
thanks
Edit: its a 2004 gto by the way..
thanks
Edit: its a 2004 gto by the way..
12-11-2006, 02:26 PM
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they said at the shop that they thuoght that the muffler was too deep and would make the car not be able to clear anything at all and when it went over railroad tracks and stuff like that it would bottom the muffler up and tear it up in no time... so dunno
12-11-2006, 06:44 PM
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It's a tight fit, not exactly stock muffler replacement size..... flowmaster sells a kit specifically for the GTO with some GTO sized mufflers, take a look at it here http://store.summitracing.com/partde...5&autoview=sku
http://www.gmhightechperformance.com.../photo_05.html
thats the undercariage of an 04 GTO undergoing a new exhaust install
I recall GTO mufflers are 9 inches by 11 inches and 4 inches deep, but thats just off the top of my head..... this is my first ls1tech post, but i'm a member of ls1gto... there is also alot of information on that website, as well as this one
http://www.gmhightechperformance.com.../photo_05.html
thats the undercariage of an 04 GTO undergoing a new exhaust install
I recall GTO mufflers are 9 inches by 11 inches and 4 inches deep, but thats just off the top of my head..... this is my first ls1tech post, but i'm a member of ls1gto... there is also alot of information on that website, as well as this one
12-11-2006, 06:51 PM
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alright thanks a lot... and any more ideas on his exhaust would be appreciated... just a quick q... how many cats are actually on his car? he hasnt touched them... but ive heard 4 and ive heard 2 and didnt know which was right
12-11-2006, 08:18 PM
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Here is the under carriage of the 2004 GTO
(2 CATS and 2 Resonators on the 04's)
http://peddersusa.com/Solution_GTO_Parts.htm
(2 CATS and 2 Resonators on the 04's)
http://peddersusa.com/Solution_GTO_Parts.htm
12-11-2006, 09:29 PM
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alright thanks a lot... and any more ideas on his exhaust would be appreciated... just a quick q... how many cats are actually on his car? he hasnt touched them... but ive heard 4 and ive heard 2 and didnt know which was right
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12-12-2006, 09:26 AM
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Originally Posted by squeals99
so the front two things that look like cats are resonators? and the back two are actually cats?
12-12-2006, 10:16 AM
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magnaflow makes a muffler that is the exact replacement of the stock ones. Or, just pay a muffler dude and hack those mufflers off and have yourself a homemade loudmouth!
12-12-2006, 02:22 PM
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ic... ill have to tell him about all this stuff... cuz he wants something that sounds aggressive but doesnt cackle very badly when its coming down on the rpms... and i also found out that the h pipe on his system basically isnt an h pipe... so if he got an x pipe or h pipe that should take care of some of that problem... and right now i dont really like his sound too much... he has his cats on and resonators... no mufflers but 4 12'' glasspacks... so two on each pipe and it sounds so airy and im not a fan of it... the resonators arent hooked up to anything electrically are they? so if they are taken off the check engine light wont come on or whatever it would happen to say on the computer?
12-13-2006, 11:11 PM
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Flowmaster 40's are worse than the factory mufflers for power. The only thing they are good for is making mustangs sound good. Call them and try to get flow #'s on any of their mufflers. Most good companies are happy to give you flow ratings, not embarrassed.
12-14-2006, 05:10 PM
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Originally Posted by gametech
Flowmaster 40's are worse than the factory mufflers for power. The only thing they are good for is making mustangs sound good. Call them and try to get flow #'s on any of their mufflers. Most good companies are happy to give you flow ratings, not embarrassed.
12-16-2006, 09:54 PM
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Originally Posted by gametech
Flowmaster 40's are worse than the factory mufflers for power. The only thing they are good for is making mustangs sound good. Call them and try to get flow #'s on any of their mufflers. Most good companies are happy to give you flow ratings, not embarrassed.
..." DUH "..... 
BTW--Their FLOW #'s are WELL PUBLICIZED..... 
Last edited by NHRAMAN; 12-16-2006 at 10:18 PM.
