GT Performance Mods 2005+ Mustang GT Performance and Technical Information

For those with longtube headers...your dyno #s?

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Old Nov 7, 2009 | 09:40 PM
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BlueSkyVert's Avatar
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For those with longtube headers...your dyno #s?

Looking to see what other folks with longtubes are getting on the dyno (Dynojet, to be exact).

I have JBA longtubes with off-road H pipe, magnaflow axlebacks, 3.55s, JLT intake, SCT Xcal3, and 20 inch wheels.
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Old Nov 9, 2009 | 07:12 PM
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When I had my car dynoed, I was running Kooks LTs with cats, Steeda CAI with Brenspeed 91 octane tune, and Magnaflows, also with 20in wheels. I was right at 310 hp at the wheels.
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Old Nov 9, 2009 | 08:17 PM
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Thanks!
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Old Nov 10, 2009 | 10:26 PM
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I hit 336 at the wheels with steeda cai and elbow, borla lt's, borla off-road x, borla over axles, and stingers, bbk twin 62mm tb, and steeda udp's along with a tillmanspeed 93 race tune with stock 17's-non-ustang dyno
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Old Nov 13, 2009 | 01:06 PM
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Originally Posted by THebb22
When I had my car dynoed, I was running Kooks LTs with cats, Steeda CAI with Brenspeed 91 octane tune, and Magnaflows, also with 20in wheels. I was right at 310 hp at the wheels.
That sounds about righ to me, I have the FRPP shorty's so I am only getting 299.26 RWHP on a Dyno Jet. Shorty headers (IMO) are not worth the time or effort for performance.
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Old Nov 13, 2009 | 01:31 PM
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John Henry

[FONT="System"]2005 Mustang GT, JBA longtubes, UPR off road x-pipe, Flow masters, JLT cold air, Meziere elec. water-pump, Steeda charge motion delete plates, Comp Cam "***** Thumpr" cam shafts, Dyno Jet tuning. 355 HP, 390 Torque to the wheels and shifted with a Steeda tri-axe. The car is also lowered 2.25'' in the front and 1.75 in the rear. Has 10x18 Bullets wrapped with NITTO 555's on all four corners, Cervinni rear spoiler and painted stripes.
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Old Nov 13, 2009 | 01:44 PM
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Johnstang

[FONT="System"]2005 Mustang GT, JBA longtubes, UPR off road x-pipe, Flow masters, JLT cold air, Meziere elec. water-pump, Steeda charge motion delete plates, Comp Cam "***** Thumpr" cam shafts, Dyno Jet tuning. 355 HP, 390 Torque to the wheels and shifted with a Steeda tri-axe. The car is also lowered 2.25'' in the front and 1.75 in the rear. Has 10x18 Bullets wrapped with NITTO 555's on all four corners, Cervinni rear spoiler and painted stripes.
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Old Nov 13, 2009 | 03:36 PM
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I'm at 302 RWHP and 323 RTQ with only an Airaid CAI (with the MVT inner tube still in, making the MAF stock size. Gotta change that this winter and take it out for more air), AR 1 5/8" Longtube headers with catted H pipe, and Borla stingers, and a Tillman 93 tune!
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Old Nov 13, 2009 | 03:48 PM
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Originally Posted by 05fordgt
I'm at 302 RWHP and 323 RTQ with only an Airaid CAI (with the MVT inner tube still in, making the MAF stock size. Gotta change that this winter and take it out for more air), AR 1 5/8" Longtube headers with catted H pipe, and Borla stingers, and a Tillman 93 tune!
We have a very similiar setup, but I'm about 5 hp (I think, I can't find my dyno sheet) shy of your number. I wonder if I'm losing some extra horses with my off-road H? I really want a catted pipe anyways - the off-road is just too stinky! I know the 20s are hurting me too
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