GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Thanks Brenspeed

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Old 3/7/17, 11:11 AM
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Thanks Brenspeed

Finally did some performance upgrades to my '09 Mustang last year. I bought her new in '09 and have just over 23,000 miles. Over the summer had Eibach Pro-System Plus suspension, BMR rear adjustable pan head bar, GT500 style strut mount upgrade, BBK long tube headers and high flow cat X pipe. I already had Corsa cat back exhaust and with the long tube headers and high flow cats the sound increased quite a bit at WOT. Not to bad on the sound with mild throttle input, but it is loud when you get on the throttle.

Last fall I took her to Brenspeed for an Edelbrock stage 1 upgrade including Comp cams and a larger aluminum radiator. The expert dyno tune put out 500 rwhp and about 450 lbs torque. Thanks Brenspeed for the fantastic job.




Old 3/7/17, 02:42 PM
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Very nice!!
Enjoy the great looking car and power/torque.
Old 3/7/17, 04:26 PM
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That is an awesome fat torque curve...nice car too!
Old 3/7/17, 11:15 PM
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Very nice. Love the car and the numbers are fantastic.
Old 3/8/17, 01:23 AM
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Thanks Guys. It's like driving a new car again.
Old 3/8/17, 07:17 PM
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Just goes to show there's nothing like a custom dyno tune
Old 3/8/17, 09:33 PM
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Originally Posted by m05fastbackGT
Just goes to show there's nothing like a custom dyno tune
I second that, I took my car to Brenspeed last November and had a Paxton Throwback installed. Here's my dyno run. Too many mods to list but it has BBK LTH and hi flow cats with Pype Bombs. FRPP intake and throttle body.

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Old 3/31/17, 03:16 AM
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Really nice power curve and one of my favorite colors. You will surprise a lot of cars out there.
Old 4/3/17, 05:36 PM
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Thanks for all the nice comments




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