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02-23-2008
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#1 |
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Join Date: Aug 2007
Location: Germany
Posts: 6
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Software to change speedometer signal
Does anybody has a software or know how to change the original set-up of the signal which runs from the transmission to the ECM/CCM?
As I've changed my rear end to another ratio, I'll need to modify my present system for correct MPH reading. I know there are some additional convertors/gear sets on the market, but I would prefer to alter the existing software if possible. If somebody might have an idea, would be great! Thanks Thomas |
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02-23-2008
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#2 |
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Guest
Posts: n/a
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Re: Software to change speedometer signal
Only thing that is available is the speedo correction box, which you splice into the existing wires and program it.
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02-24-2008
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#3 |
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Join Date: Aug 2007
Location: Germany
Posts: 6
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Re: Software to change speedometer signal
Thanks Jeff,
could you recommend any supplier/manufacture or doesn't matter? Thanks Thomas |
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02-24-2008
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#4 |
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Posts: n/a
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Re: Software to change speedometer signal
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03-25-2010
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#5 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Software to change speedometer signal
Sorry to dig up this old thread...
My question is to Jeff, Have you used the Cyberdyne box? If so how well did it work? I just changed to 4.10 gears and bought a Cyberdyne box. When I hook it up, the speedo just sits there at zero and eventually the "service engine soon" light comes on. When I remove the box all is OK. I'm calling Cyberdyne in the morning. Any thoughts? H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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03-25-2010
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#6 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Software to change speedometer signal
Why wouldn't you change speedo gear in trans?
 When I installed a ZF-6 in my 84, I also used 3.45 gears in rear. Just need right combo of drive and ring gear. |
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03-26-2010
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#7 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Software to change speedometer signal
I would get the gears from Haibeck.. for the trans and be done
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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03-26-2010
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#8 |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Software to change speedometer signal
Gears are $120 from Haibeck not to mention the labor involved. The Cyberdyne calibration box was $49 and is precisely adjustable. (assuming I can get it working)
H
__________________
90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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03-26-2010
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#9 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: Software to change speedometer signal
you might give bill boudreau a call he did one for me on my white car when we did the clutch and tranny .
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