GT500 Mufflers
GT Member
Joined: July 22, 2012
Posts: 108
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From: Lake Forest, Calif.
Trackey is a complex system, modifying a wide range of parameters, traction, performance, braking, etc. Ford rates a GT at 420 hp, a Boss 302 at 444 hp, and with Trackey 469 hp. I think they use crankshaft rating, not a dyno rating, as you would get. Ford's rating [Higher than you will get] is for "comparison" only. But you will get more horsepower on a dyno, with Trackey installed, and lower quarter mile times too. IMO, Trackey works great, in a variety of ways, especially traction control!
Back to the topic, GT500 Sport axleback system, What I notice most is torque, a significant increase in torque. From a dead stop, I can easily use 3d gear and get a clean launch.
Back to the topic, GT500 Sport axleback system, What I notice most is torque, a significant increase in torque. From a dead stop, I can easily use 3d gear and get a clean launch.
Last edited by Cranky Old Man; Sep 17, 2012 at 09:06 AM.
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Joined: July 4, 2012
Posts: 2,982
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From: Washington, DC
The factory ratings are off. Been proven time and time again. GT really puts out 435 at the crank, and the Boss 302 around 450 (probably actually being generous there, minimal "gains" on stock GT intake, the "gains" are the fact that it can carry the power to a higher RPM).
I'm almost willing to bet that a stock GT with a tune will put out more to the ground than a Boss with track key.
Track Key is nothing more than a cute little gimmick they sold to B-302 buyers.
There are real parts differences between the Boss and the regular GT, I'm not debating that, but the only power adding change is the intake which allows it to still breathe at 7700, where the GT intake starts to falter around 6500. Then of course is the engine parts that allow it to also spin to that speed regularly without stretching rod bolts for example.
I'm almost willing to bet that a stock GT with a tune will put out more to the ground than a Boss with track key.
Track Key is nothing more than a cute little gimmick they sold to B-302 buyers.
There are real parts differences between the Boss and the regular GT, I'm not debating that, but the only power adding change is the intake which allows it to still breathe at 7700, where the GT intake starts to falter around 6500. Then of course is the engine parts that allow it to also spin to that speed regularly without stretching rod bolts for example.
Last edited by TheDivaDanielle; Sep 17, 2012 at 09:11 AM.
Mach 1 Member
Joined: March 25, 2012
Posts: 666
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From: MD
Quit while your behind. The software gives the car full race calibration and two-stage launch control without negatively affecting the warranty.
Last edited by BackinBlack13; Sep 17, 2012 at 10:06 AM.
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Joined: July 5, 2012
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Originally Posted by BackinBlack13
Quit while your behind. The software gives the car full race calibration and two-stage launch control without negatively affecting the warranty.
Full race calibration or not, it's not the best tune by any means. I guess that depends on what you value though. It's clearly the best tune in that guys eyes, which is all that matters.
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Joined: March 9, 2011
Posts: 16,242
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Originally Posted by TheDivaDanielle
GT really puts out 435 at the crank
Last edited by 11SHELBYGT500; Sep 17, 2012 at 11:02 AM.
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Joined: July 4, 2012
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From: Washington, DC
the simple fact that they are dynoing consistantly around 375rwhp give or take a few? 15% would be a good estimate for drivetrain loss, maybe up to 18% max on an automatic.
That is -- unless these things are way more efficient than what was commonplace 5-10 years ago. In which case, I'll gladly pack up my suitcase and leave this thread alone, cuz basically I'd be shooting in the dark entirely.
That is -- unless these things are way more efficient than what was commonplace 5-10 years ago. In which case, I'll gladly pack up my suitcase and leave this thread alone, cuz basically I'd be shooting in the dark entirely.
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Joined: March 9, 2011
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Originally Posted by TheDivaDanielle
the simple fact that they are dynoing consistantly around 375rwhp give or take a few? 15% would be a good estimate for drivetrain loss, maybe up to 18% max on an automatic.
That is -- unless these things are way more efficient than what was commonplace 5-10 years ago. In which case, I'll gladly pack up my suitcase and leave this thread alone, cuz basically I'd be shooting in the dark entirely.
That is -- unless these things are way more efficient than what was commonplace 5-10 years ago. In which case, I'll gladly pack up my suitcase and leave this thread alone, cuz basically I'd be shooting in the dark entirely.
GT Member
Joined: July 22, 2012
Posts: 108
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From: Lake Forest, Calif.
Too much argument for me, everybody's RIGHT about something, but I still think the GT500 Sport axleback is the "best value" in an exhaust system, and has the "best sound" too!
Anything that takes my car to 12.0 second quarter mile, is O.K., by me!
Anything that takes my car to 12.0 second quarter mile, is O.K., by me!
Last edited by Cranky Old Man; Sep 17, 2012 at 11:40 AM.
GT Member
Joined: July 22, 2012
Posts: 108
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From: Lake Forest, Calif.
Perhaps someone on this website has done a "resonator delete" on a 2013 Boss 302??? It has a different exhaust system, with side pipes, and resonators might be in different location? An exhaust shop could make slip-ons with clamps.
Bullitt Member
Joined: April 14, 2012
Posts: 368
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From: SoCal
lets ask the dyno --"On the Dyno, Jarrod’s GT saw an increase of 9HP and 6.7 ft TQ with final dyno numbers reading 372.7HP and 361.5TQ. To say we were surprised would be an understatement. The Mustang got a chance to cool some while performing the axle back install but the building we were dyno tuning in was hot and humid so I doubt the number was really skewed that much by the cooling."
http://www.youtube.com/watch?v=KqVh5...ayer_embedded#!
