Flowmaster VS Borla
Thread Starter
Racer
Joined: Feb 2007
Posts: 410
Likes: 10
From: Woodstock GA
Flowmaster VS Borla
Hey all I was wondering if anyone could help me make up my mind. I have an 07 Z51 6 speed manual and will be doing a host of mods.
I have used flowmaster mufflers on most of my cars in the past. I like the borla catback system for corvettes but heard a soundbite of the Flowmaster cat back the other day and loved the sound
My question is Are there any horsepower gains comparing the two? I have heard that cat backs offer little HP gains on these cars that most of the power will come from the LG longtubes and highflow cat hardware.
Also there is a big price gap between the two.
Any help would be great.
I have used flowmaster mufflers on most of my cars in the past. I like the borla catback system for corvettes but heard a soundbite of the Flowmaster cat back the other day and loved the sound
My question is Are there any horsepower gains comparing the two? I have heard that cat backs offer little HP gains on these cars that most of the power will come from the LG longtubes and highflow cat hardware.
Also there is a big price gap between the two.
Any help would be great.
Burning Brakes
Joined: Dec 2004
Posts: 1,075
Likes: 3
From: Penn Valley California
I have Flowmasters(American Thunder C6 system) also,and a MN6 and love the sound.No noticable drone on mine either.Flowmaster says that they tuned this version of the Delta 50 muffler especially for the C6.
Pro
Joined: Jan 2007
Posts: 599
Likes: 0
From: West Sacramento
My experience is with Flowmaster Super 40's replacing the stock mufflers on my GTO. Love the sound. Just the right amount of gurgle and pop when decelerating. City cruising gets you noticed in a good way and highway cruising is pretty quiet. Plan to do the same on a Vette.
Melting Slicks
Joined: Mar 2004
Posts: 3,002
Likes: 0
From: Surrey BC
i don't know but i always think FLOWMASTERS = MUSTANG...
i have no idea why...i had borlas on my c5 and LOVED the sound...especailly with a set of long tube headers 
the c6 has corsas...there almost SILENT... not my style...hopefully the headers and off road pipes make it sound a bit better...if not i may be going for borlas again
i have no idea why...i had borlas on my c5 and LOVED the sound...especailly with a set of long tube headers the c6 has corsas...there almost SILENT... not my style...hopefully the headers and off road pipes make it sound a bit better...if not i may be going for borlas again
Thread Starter
Racer
Joined: Feb 2007
Posts: 410
Likes: 10
From: Woodstock GA
Thanks for all the feedback.
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
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Racer
Joined: Dec 2006
Posts: 485
Likes: 0
From: Spring TX
Thanks for all the feedback.
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
i have flows on my firebird. after having the car since 99, i cant remember why i chose to go with that except so i could hear the car at all times. it annoys the hell out of me now when i hear this loud hum and drone at any and every speed/rpm.
Drifting
Joined: Aug 2000
Posts: 1,747
Likes: 0
From: Sebring, Florida
Thanks for all the feedback.
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
I used the Magnaflows (#14336? Can't remember part numbers). Used the stock tips and got out for under $325.00. Not really loud like some systems, and only a little louder at idle. A little drone at 1500-1800 rpms but the 6spd takes care of that. Put your foot in it and you can hear them just fine. I'm sure the Flowmasters will serve you just fine.
Last edited by PapaTango; Feb 21, 2007 at 12:26 PM.
Melting Slicks
Joined: Jun 2006
Posts: 2,164
Likes: 3
Thanks for all the feedback.
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
I talked with a couple of vendors and they told me to stay far away from the flowmaster kit saying that you actually lost power with that set up. I found them for $323.00 from a local place here in Atlanta and the price just seems too good.
I have always heard that with the C5/C6 that changing the catback was not going to result in much hp gains it was more just for sound but I don't want too loose any power either.....
Melting Slicks
Joined: Feb 2005
Posts: 3,380
Likes: 103
From: Visalia CA
I've had my flowmasters on for a week, highly satisfied. Tried the maganaflow weld in muffler option first, and heard another car with Bullets. Sometime in the next week or so when I get a chance I will post interior sound clips from a drive
Melting Slicks
Joined: Feb 2005
Posts: 3,380
Likes: 103
From: Visalia CA
Drifting
Joined: Nov 2005
Posts: 1,629
Likes: 3
From: Edmond OK
I'll see if I can get ahold of the dyno charts. I wasn't aware we were talking about a specific model number. However from the results i've seen in general flowmaster typically doesn't flow as well as other systems, so if a vendor said it didn't make more hp than another kit, i'd be inclined to beleive them. I just ordered the Borla Stinger, so if someone want's to drive to OK and has the flowmaster I'd be willing to bolt it up and do a back to back test on the dyno..
Last edited by Atomic-Vette; Feb 21, 2007 at 10:26 PM.
Team Owner
Joined: Mar 2006
Posts: 50,968
Likes: 0
From: Jurassic Park Socal.
St. Jude Donor '08-'09-'10-'11
Borla rox
Flowmasters are too ghetto to be on such a nice machine as a C6. Borla is IMO such a nice exhaust I wouldnt even consider anything less for my vette. When I think of Flowmaster I think of a primered Camaro with some Joe Dirt lookin dude drivin. I run Dynotech headers into a catback borla and its a beautiful sound with a very nice performance.
just addin my .02
just addin my .02
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Flowmasters are too ghetto to be on such a nice machine as a C6. Borla is IMO such a nice exhaust I wouldnt even consider anything less for my vette. When I think of Flowmaster I think of a primered Camaro with some Joe Dirt lookin dude drivin. I run Dynotech headers into a catback borla and its a beautiful sound with a very nice performance.
just addin my .02
just addin my .02
Melting Slicks
Joined: Apr 2006
Posts: 2,197
Likes: 0
From: Phoenix az
flowmasters got the guy +8, borla +10
i have the flows, love em, love the price, sound great and with the vararam nice cheap mods and i can feel the power
just because a product doesnt cost too much and avoids the c6 tax doesnt mean its crap
listen to the sound clip, they are great, it doesnt sound like a mustang or a camaro to me,
it just sounds like an awesome engine
Last edited by jklarkpimp; Feb 23, 2007 at 01:43 AM.
