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 Post subject: Speedo Calibration
PostPosted:Fri Jan 14, 2011 11:03 pm 
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Small Block
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Joined:Mon Apr 05, 2010 10:53 pm
Posts:24
Car Details:1999 Z28 T-Top Pewter Metallic, SLP Cold air induction.
Lowered on Eibach Sportline suspension adjustable panhard rod,Flowmaster American Thunder exhaust. ZR1 Rims
Location:Surrey
I have a 99 Z28 which I have just replaced the gears from 2.73 to 3.23.
My problem is that the speedo is now reading incorrectly and the auto box shift pattern is wrong. Now I knew this would happen so I need somebody who has got an HP tuner or Hypertech device to reprogram the PCM.

Is there anybody in the south who could help me out.
Cheers
John


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 Post subject: Re: Speedo Calibration
PostPosted:Sun Jan 16, 2011 9:45 pm 
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Big Block
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Joined:Thu Nov 05, 2009 1:58 pm
Posts:479
Car Details:'99 Z28 A4 Modified :D
Best ET: 12.0 @ 116 mph (0-60ft of 1.8 s)
Location:Leiden-Netherlands (car isnt though :( )
hi,

i've got EFIlive tuner, but im up here in Leeds. Plus would need to get a license to tune your car, there about £75 quid. But i'm up north. Try get a price from some tuners down their, auto pontiac may do it. If not I could do it at a visit to santa pod in future but noth for month or so.

_________________
'99 Z28 A4, 253 LS2 heads, 228R TSP cam, Patriol Dual Springs, Double roller timing chain, LS6 ported oil pump, OBX LTs, 3" True Duals, LS6 intake, 42lb/hr injectors, SLP lid + bellow, EFIlive COS 3 Speed Denisty Tune (self tuned), 3200 Circle D stall, CAI mod, KYB AGXs, Eibach Pro Front Springs, UMI panhard, LCA + Brackets, Strut Brace, Custom Subframe connectors, WS6 axle with 3.42s, 18" American Racing Rebels, US mirrors, 93 tail lights, 3.5 inch custom cowl hood. Mickey T's Street DRs on Vette-ZR1 wheels for the strip !
Best ET: 12.0 @ 116 mph (on a 0-60ft of 1.8 s)
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 Post subject: Re: Speedo Calibration
PostPosted:Mon Jan 17, 2011 5:41 pm 
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Small Block
User avatar

Joined:Mon Apr 05, 2010 10:53 pm
Posts:24
Car Details:1999 Z28 T-Top Pewter Metallic, SLP Cold air induction.
Lowered on Eibach Sportline suspension adjustable panhard rod,Flowmaster American Thunder exhaust. ZR1 Rims
Location:Surrey
Thanks for the reply, can't believe I didn't think of Autopontiac. If I have no joy I may well be back in touch :D


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