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04-17-2013
Hello,
I have a GXP with 132,000 miles on it. I was informed by a GM service mechanic that my mufflers were hollowed out and that a replacement from GM was going to be $1400. He mentioned going to another service shop that was known for fabricating, but I'm not sure I want to do that. Is there a reasonable muffler replacement out there? I did see the Magnaflow but I have no idea if that's any good. Any suggestions? Thanks!
04-17-2013
buy stock mufflers and go to a welding shop. $300 MAX!
04-17-2013
No no not stock buy borla or another good brand...just not the flow master 40 series they sound like poopie
04-17-2013
Actually flowmasters in general sound bad
04-17-2013
stock sounds better bro
04-17-2013
I can vouch for the Magnaflow. It sounds terrific.
OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
04-17-2013
maybe inside the car. Hey, im not flaming. Ive just heard alot of gp's exhaust systems in person
04-17-2013
you'll get lots of opinions here. i use flowmaster myself and love my exhaust. your best bet is to search youtube for grand prix exhaust videos and make a choice that way.
04-17-2013
i think you think its a 3.8 i thought that at first too lol then i realized it was a 5.3Originally Posted by BlackFlag
04-17-2013
This isn't just any gp...its a gxp and a lot of mufflers sound way better than the stock ones
04-17-2013
ill explain why im saying this. Yes, all mufflers sound good on the 3.8 until you hit about 2,500 rpms. After that it gets ricey BIG TIME. If you get stock mufflers and throw on some headers it will be better for the car AND will be louder.
04-17-2013
i redact all ive said. buy borla or magnaflow
My dumba** doesnt read evidently.
04-17-2013
Ugh...I give up explaining the 5.3 vs the 3.8 stock exhaust
04-17-2013
04-17-2013
Nothing to explain. I am just retarded and "don't read to good" haha.
04-17-2013
Lol 1400!!! For stock mufflers what kinda **** are they trying to pull dude just go to a muffler shop and they will get you squared away and remember have an idea of what u want or else any service place will take advantage of You. Magna flow exhaust systems are great and direct volt tin and will run you about 550 iirc but they won't fall apart and you will fall in love everytime you start the car
04-17-2013
Thanks for all the comments! Yeah, even the GM shop thought $1400 was ridiculous for the mufflers. I called a muffler shop and they're doing some research on it.
04-18-2013
Buy some online for cheap, and spend like 40-100$ at most to install them. Boom. They prolly want to install a whole catback system on your car.
04-18-2013
I'll save up the trouble factory inlet on the Gxp mufflers a whopping 2.25 inches the stock tips are even worse
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