long tube header/ retune question - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 4 Old 10-05-2008, 01:35 PM Thread Starter
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long tube header/ retune question

ok so i just bought a set of mac 1-5/8 long tube headers and mac power chamber h-pipe

my car was tuned with 1-5/8 shorty's and off road h-pipe, it was 90 deg in the garage that day with 17% humidity .

i'm go'in to a track rental friday and it's go'in to be 63 deg out , so my question is

.. if i install the long tubes w/the power chamber do you think i would need to retune my car since it was tuned with the current set up ... i don't have time to get it tuned after i install them...should i just run the car as is ? or if i install the headers do you think my tune will be way off and go lean ?



thanks Dickie


91 lx Hatch 6.0(STOCK SHORTBLOCK) LSX 412rwhp
ON 275 RADIALS
10.84 @ 127 on motor
10.18 @ 135 150 shot ( still need tuning)

Last edited by 331-stang; 10-05-2008 at 01:40 PM.
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post #2 of 4 Old 10-06-2008, 09:32 AM Thread Starter
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14 people looked ..no reply's....... anyone ? anyone ?


91 lx Hatch 6.0(STOCK SHORTBLOCK) LSX 412rwhp
ON 275 RADIALS
10.84 @ 127 on motor
10.18 @ 135 150 shot ( still need tuning)
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post #3 of 4 Old 10-06-2008, 10:35 AM
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I think you would be okay. If you had someone else tune it you can ask them and see if the car would run lean but I think your fine.
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post #4 of 4 Old 10-06-2008, 12:18 PM
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I would also think you will be fine.

88 LX, 69 410W , AFR ??/70mm T.B., FTI cam, 3.55's, BBK 1 3/4" L.T, Edel 351W Victor intake, ???mm maf, 60 lbs. injectors,MSD, chipped Vortech T trim making 16 psi, MAFtuner, PA AOD - Lentech VB-5000 non-lockup, Mr. Freeze.
Old best 1/4-11.056 @ 123.62 mph Spinning real bad! Old setup
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