Wait, your only change was the very back part of the exhaust? And you expected a gain? I'm not familiar with the GTs pipes, but most systems, any restriction that might gain from a change are way up front. Seems like expecting a change from swapping the tips.
That's what Corsa claims on their web site...they advertise that their Corsa axle-backs make gains of 13 horsepower and 9 lb/ft torque. There have been many folks on the various forums on the web claiming they too made such gains on their 05/06 Mustang GT with the Corsa axle-backs.
I am going to add a Corsa X-pipe this week. This is about the last thing I can do that is a simple bolt-on to try to get my GT past 280 RW horses. The only other thing I can try are underdrive pullies and I really don't want to hassle with putting them on.
For one, I'm always leery of vendor claims. Now, about the flow numbers. If the stockers arent restricting the system significantly, then it doesnt matter how much better the new one flows.
....are you saying that your corsa didn't gain anything over the stock axle back or your JBA setup?
Yes that is correct. It seems that no matter what axle-backs I have on it the CAI and the tune are the reasons ffor my gain...not the axle-backs.
But I still love the Corsa's axle-backs sound. It is much closer to the stock tone (just a tad louder) rather than the lower toned JBA's...the Corsa axle-backs are much "tighter" in their overall sound.....not having any "sloppy" raspiness as the JBA's developed as more time (or miles) passed. Corsa axle-back has absolutely no drone as the JBA's did.
Yes that is correct. It seems that no matter what axle-backs I have on it the CAI and the tune are the reasons ffor my gain...not the axle-backs.
But I still love the Corsa's axle-backs sound. It is much closer to the stock tone (just a tad louder) rather than the lower toned JBA's...the Corsa axle-backs are much "tighter" in their overall sound.....not having any "sloppy" raspiness as the JBA's developed as more time (or miles) passed. Corsa axle-back has absolutely no drone as the JBA's did.
I went to the Corsa page and I read the advertisement more closely. They refer to the Corsa axle-backs as their Corsa Exhaust System. The HP/TQ gain is associated to the axle-back advertsiement blurb.
However their dynosheet showing the gain shows that the Corsa Exhaust system is both the Corsa axle-backs and the Corsa X-Pipe together.
Then when you go to the X-pipe advertisement you find out that the HP/TQ is actually obtained from the x-pipe because the GT's stock H-Pipe stops crossing the gasses at above 3000 RPM's which presents a bottle-neck, whereas their X-pipe the gas crossing never is prevented no matter what RPM.
They are a bit deceiving with how the advetisement is visually laid out so that you can wrongly conclude the axle-backs are where the gain is made...but I shouldn't be surprised....that's the nature of advertising.
I've got Corsa on my car and it is TOP notch quality. It might not be as loud as some system, but is also doesn't have that "cheap" tin can sound.
I know this has nothing to do with a mustang, but it is worth every penny.
I just installed the Corsa X-Pipe. Going on the dyno tomorrow. Now we will find out if it really makes the claimed gains as advertised. Results tomorrow evening.
As for the sound you ae absolutely correct - it doesn't sound cheap like all the others. I noticed that immediately.
I just installed the Corsa X-Pipe. Going on the dyno tomorrow. Now we will find out if it really makes the claimed gains as advertised. Results tomorrow evening.
As for the sound you ae absolutely correct - it doesn't sound cheap like all the others. I noticed that immediately.
Sonic:
I'm very interested in putting some axle back after market mufflers on my GT500 some day soon. I'm curious what others you've heard and how they sound?
Thanks,
____________________________________ Bruce
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I'm very interested in putting some axle back after market mufflers on my GT500 some day soon. I'm curious what others you've heard and how they sound?
Thanks,
JBA:
On my 2006 Mustang GT I had the JBA axle-backs before the Corsa - very low deep sound, a slight drone at 1700 RPM. Nice chrome rolled tips. When first put on the low deep sound was somewhat loud. At 3000 miles the loudness and drone volume decreased significantly. Good quality muffler and quite affordable. No HP or TQ gains. Great looks - 2.5" chrome rolled straight-cut tips and embossed with a "JBA" imprint.
Ford Racing:
I have also heard in person a 2006 Mustang GT with the Ford Racing axle-backs. A little higher tone than the JBA's. The FR axle-backs sound reminds me of the Flowmaster quiet thunder catbacks I have on my 03 Cobra.
Good construction. The price range falls between the JBA and Corsa. No HP or TQ gains. Great looks - 3.0" chrome rolled slanted-cut tips and embossed with scripted "Ford Racing" imprint.
Corsa:
Now I have the Corsa axle-backs. Sounds very much like stock but the sound has a very rich smooth quality about it. Corsas use a new sound reflection technology that totally removes drone and vibration and leaves in only the good tone. The exhaust sounds very tuned and tight. Great looks - 3.5" chrome rolled slanted-cut tips and embossed with a pale goldish tone "CORSA" imprint. The cost is very expensive. The axle-backs alone do not provide an increase in HP/TQ however couple them with the CORSA
X-Pipe and the gain is supposed to be anywhere from 12 to 15 RWHP gain and 10 in RWTQ. I will know for sure about this gain tomorrow (Saturday) for I am getting the car retuned on teh dyno. I can say that after I rode around for about 60 miles today with the newly installed Corsa X-Pipe I did notice at seat-of-the-pants difference in Torque and throttle reponse (with the temperature hitting 95 today.
If you are looking for louder low less refined sound then I would say go JBA or Ford Racing. If you like a more refined sound and closer to stock then Corsa is the one.
Last edited by Sonic Blue GT; 08-25-2006 at 11:09 PM.
Here's my goal. The car is too quiet! Just like my "R" was.
I'd rather not risk getting a drone! I'm going to be doing highway driving with this car.
The Corsa's sound like the muffler for me but damn, 3.5" tips?!?! Isn't that fart can territory? Got any pics?
Thanks!
I am sorry..the tips on the Corsa are actually 4" not 3.5" but they taper as they reach the muffler. I will get pictures of mine but in the meantime here is a URL so you can see the tips on a GT. They really look nice on the GT. Don't look anything like fart-cans.
Here's my goal. The car is too quiet! Just like my "R" was.
I'd rather not risk getting a drone! I'm going to be doing highway driving with this car.
The Corsa's sound like the muffler for me but damn, 3.5" tips?!?! Isn't that fart can territory? Got any pics?
Thanks!
You probably already know this, but the GT500 comes stock with the mufflers from the automatic version Mustang GT. You can change them to the manual transmission stock mufflers and pick up a little bit of sound with no risk of drone. (automatic and manual transmission mufflers are different). You can also do this dirt cheap.
Most dealers have several sets of manual transmission muffler take-offs just sitting around. My dealer allowed me to bring my stock GT500 mufflers in and swap them for free for a set of his manual take-offs.
You can swap the mufflers yourself in about an hour. You might want to try this before you install something aftermarket.
Here's my goal. The car is too quiet! Just like my "R" was.
I'd rather not risk getting a drone! I'm going to be doing highway driving with this car.
The Corsa's sound like the muffler for me but damn, 3.5" tips?!?! Isn't that fart can territory? Got any pics?
Thanks!
OK the results of adding in the Corsa X-Pipe to my Corsa axle-backs:
RWHP gain was 8.2
RWTQ gain was 3.1 ft-lbs
My final numbers @ 90 degrees F and humidity 50%:
RWHP 288.2
RWTQ 298.1
So the gains are all in the X-pipe and have nothing to do with the axle-backs. Simply put - there are absolutely no axle-backs for the 2005-07 GT Mustang that provide a gain in HP or TQ....if there is any claim from a manufacturer that there is (like Corsa) then they are not telling you that there was an X-Pipe involved somewhere when they did their testing.
I am certain that if I had bought the Corsa X-Pipe and mixed it in with my previous JBA's or any after-market axle-back that I probably would get the same gains I showed today.
In any case I am happy with the numbers. I would like some suggestions as to how to break 300 RWHP though. I was thinking under-drive pullies but I haven't heard anything positive from anyone who has tried them. Any opinions on this one?
Last edited by Sonic Blue GT; 08-26-2006 at 01:33 PM.
OK the results of adding in the Corsa X-Pipe to my Corsa axle-backs:
RWHP gain was 8.2
RWTQ gain was 3.1 ft-lbs
My final numbers @ 90 degrees F and humidity 50%:
RWHP 288.2
RWTQ 298.1
So the gains are all in the X-pipe and have nothing to do with the axle-backs. Simply put - there are absolutely no axle-backs for the 2005-07 GT Mustang that provide a gain in HP or TQ....if there is any claim from a manufacturer that there is (like Corsa) then they are not telling you that there was an X-Pipe involved somewhere when they did their testing.
I am certain that if I had bought the Corsa X-Pipe and mixed it in with my previous JBA's or any after-market axle-back that I probably would get the same gains I showed today.
In any case I am happy with the numbers. I would like some suggestions as to how to break 300 RWHP though. I was thinking under-drive pullies but I haven't heard anything positive from anyone who has tried them. Any opinions on this one?
Hey that sounds about right cause depending on the weather obvisously your numbers would of been better...Not bad that sound file sounds good too.
____________________________________
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03 BLACK 10th vert, STEGGY STAGE 4 PORT , 2.8 ON TOP , 4LB ON BOTTOM, BAER XTREME 6 piston brakes, ACCUFAB TB, UPR X-PIPE, CORSA dB mufflers
HR SS SPRINGS, PRO 50 SHIFTER W/MGW BLUE HANDLE, LFP CAI, LFP dual pass heat exchanger, LFP 3.2 alt pulley, AEROFORCE Gauges, OPTIMA red top
20% tint on sides/back-50% on the front window, CDC lightbar, , CCW 505'S , 20X11 305/25/20, 19X9 275/30/19
THATS IT 531RWHP 545RWTQ http://www.youtube.com/watch?v=YMiKQQ3fD_o
Results with the Corsa X-Pipe to the Corsa axle-backs:
RWHP 291.2
RWTQ 299.7 ft-lbs
@ 67 degrees F
Gain of 3 RWHP and 1.6 ft-lbs of RWTQ since my last pull with about a 20 degree difference in outside temperature. I do think at about late October or November I should be able to pull near about 296 RWHP and over 300 in RWTQ.
Last edited by Sonic Blue GT; 09-01-2006 at 09:53 PM.
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