Anything wrong with Flowmasters?
Thread Starter
Race Director
Joined: May 2012
Posts: 15,764
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From: Phoenix area, AZ
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 137
From: SoCal CA
Why would you ask if there is something "wrong" with them? Theyre made for the C5 right? So they should bolt up. Flowmaster has been around a long time so no one is gonna understand your question as whats is wrong with the brand itself. Naturally people are going to think youre asking about peformance and quality. What would be wrong with them other than going with a different setup for sound or performance reasons? If you like them so much, why even ask? There are millions of flowmaster mufflers out there and the way you talk about the price of parts it doesnt sound like youll be modding the car anytime soon so obviously horsepower aint the issue. Just get them already and buy a six pack with the money you saved.
Last edited by C5Natie; May 30, 2012 at 04:01 PM.
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
I hope you don't believe everything you read. Real world testing has already proven that they don't produce that much extra power. Corsa only claims 10-11hp so I find it very, very hard to believe that Flowmaster found 20 more hp than Corsa.
Last edited by chaase; May 30, 2012 at 04:08 PM.
Thread Starter
Race Director
Joined: May 2012
Posts: 15,764
Likes: 3,281
From: Phoenix area, AZ
Why would you ask if there is something "wrong" with them? Theyre made for the C5 right? So they should bolt up. Flowmaster has been around a long time so no one is gonna understand your question as whats is wrong with the brand itself. Naturally people are going to think youre asking about peformance and quality. What would be wrong with them other than going with a different setup for sound or performance reasons? If you like them so much, why even ask? There are millions of flowmaster mufflers out there and the way you talk about the price of parts it doesnt sound like youll be modding the car anytime soon so obviously horsepower aint the issue. Just get them already and buy a six pack with the money you saved.
Thread Starter
Race Director
Joined: May 2012
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From: Phoenix area, AZ
Don't blame me for what they say. I just repeated it. Odds are that the actual benefit is closer to what they say than not.
Thread Starter
Race Director
Joined: May 2012
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From: Phoenix area, AZ
Burning Brakes
Joined: Nov 2006
Posts: 989
Likes: 8
From: Chino Ca.
One of the easiest installs I have ever done! The tips aligned absolutely dead nuts on.
My car has no drone what so ever, and my friends C5 427 has absolutely no drone!
I went from a stock TI muffler to a TI bypass to this and I expect to die with this system on my car. I have yet to hear a system I like better.
Best of luck with your decision!
My car has no drone what so ever, and my friends C5 427 has absolutely no drone!
I went from a stock TI muffler to a TI bypass to this and I expect to die with this system on my car. I have yet to hear a system I like better.
Best of luck with your decision!
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Tech Contributor
Joined: Jan 2007
Posts: 19,458
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From: Dyer, IN
Seriously? Hey, on a differnt note....PM me your number, I would like to talk to you about a interesting investment opportunity. 
Team Owner
Joined: May 2006
Posts: 21,473
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I really liked my Flowmasters on the Vette when I had them on -
Eventually I got rid of them because a baffle came loose in them - I have heard this be the case for a few owners - but if getting them new you should be good for a long time!
And they sound real good with the LS1 motors and other mods !
Thanks,Matt
Eventually I got rid of them because a baffle came loose in them - I have heard this be the case for a few owners - but if getting them new you should be good for a long time!
And they sound real good with the LS1 motors and other mods !
Thanks,Matt
Le Mans Master
Joined: Dec 2005
Posts: 8,575
Likes: 961
From: Communist Colorado
That might happen in a couple years or so, which would be the amount of time required for me to save up the couple thousand it would cost to purchase the headers, X pipe, and used (no warranty) exhaust system, and have them installed. In the meantime, $250 sounds a lot better than $2000+. I'm also still not seeing what the big benefit is aside from the weight. I live in Texas. Cars don't rust here.
Also, I didn't pay $35k for my Vette, and it was $47k new on the sticker according to its records. A C5 coupe is certainliy not worth $35k either.
Also, I didn't pay $35k for my Vette, and it was $47k new on the sticker according to its records. A C5 coupe is certainliy not worth $35k either.
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
30hp - That is a pipe dream. It's not going to happen. 10-12 rwhp is about the most you can expect from the best complete aftermarket C5 "catback" exhaust system. You're showing a muffler only and besides, Flowmaster baffled mufflers would likely be more restrictive than a more straight through design.
Warranty - Seriously? I doubt you can collect on any possible Flowmaster warranty once they are installed.
If you think you'll like the sound then get them and install them. There is no other reason to use them besides liking the sound. The car will still work fine with just about any reasonable catback change you can make so I wouldn't worry about that. Changing the rear piping and mufflers just doesn't cause enough of a change to throw-off the fuel injection.
Warranty - Seriously? I doubt you can collect on any possible Flowmaster warranty once they are installed.
If you think you'll like the sound then get them and install them. There is no other reason to use them besides liking the sound. The car will still work fine with just about any reasonable catback change you can make so I wouldn't worry about that. Changing the rear piping and mufflers just doesn't cause enough of a change to throw-off the fuel injection.
Last edited by lionelhutz; May 31, 2012 at 01:03 AM.
Safety Car
Joined: Jul 2005
Posts: 3,572
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From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
people on a tight budget have always figured out how to beat the system and get the same thing that others have paid much more for at a lower price 
good luck with the 30hp increase drownmasters
good luck with the 30hp increase drownmasters
Safety Car
Joined: Jul 2005
Posts: 3,572
Likes: 9
From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
must be because it's so easy to add hp from installing mufflers
sorry
Last edited by printmanjackson; May 31, 2012 at 01:23 AM.
Burning Brakes
Joined: Aug 2011
Posts: 1,071
Likes: 14
From: Odessa TX
No, I don't, but then Flowmaster's own literature says it gives a 10% increase, and most companies, especially those as big as Jeg's, don't want to get nailed by the FTC for false advertising, not to mention class action lawsuits.
Don't blame me for what they say. I just repeated it. Odds are that the actual benefit is closer to what they say than not.
Don't blame me for what they say. I just repeated it. Odds are that the actual benefit is closer to what they say than not.
If you're buying parts based on manufacture HP claims... oh boy.
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
Don't sweat the rust thing. Aluminized exhaust tubing (steel with a light Oxidized Aluminum coating) is the industry standard, it will be many many years before you have to worry about them rusting out, no matter where you live. If your car is garage kept as most Corvettes are, it's a non-issue.
They will rust out and it will happen faster than you think. It's just that most owners don't realize the damage until they start to hear rattling. That's because the first parts to go are the baffles on the inside of the mufflers. This will happen quicker with owners that do not drive their cars frequently or on very short trips.
In the end, the OP seems to have made up his mind and will probably buy them. But at least he is now better informed. You get what you pay for. There is a price for quality.
Last edited by Cybermind; May 31, 2012 at 06:40 AM.
Thread Starter
Race Director
Joined: May 2012
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From: Phoenix area, AZ
School must be out.....
Thread Starter
Race Director
Joined: May 2012
Posts: 15,764
Likes: 3,281
From: Phoenix area, AZ
One of the easiest installs I have ever done! The tips aligned absolutely dead nuts on.
My car has no drone what so ever, and my friends C5 427 has absolutely no drone!
I went from a stock TI muffler to a TI bypass to this and I expect to die with this system on my car. I have yet to hear a system I like better.
Best of luck with your decision!
My car has no drone what so ever, and my friends C5 427 has absolutely no drone!
I went from a stock TI muffler to a TI bypass to this and I expect to die with this system on my car. I have yet to hear a system I like better.
Best of luck with your decision!
Thread Starter
Race Director
Joined: May 2012
Posts: 15,764
Likes: 3,281
From: Phoenix area, AZ
They will rust out and it will happen faster than you think. It's just that most owners don't realize the damage until they start to hear rattling. That's because the first parts to go are the baffles on the inside of the mufflers. This will happen quicker with owners that do not drive their cars frequently or on very short trips.
Actually, no, I haven't. The only thing I have made up mind about is NOT to do what everyone else does. I'm not a sheep.
Last edited by Corvette_Ed; May 31, 2012 at 09:28 AM.