viper 3.55 speedo box

fearsuch

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I need a 3.55 speedo calibration box
where can I find one?
thanks,
 
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fearsuch

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that yellow box speedo calibrator seems interesting, i will have to look more into it
thanks guys
 
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fearsuch

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yeah is that true about tuning it through your sct?
what happens if you have a sct already can I go through it or do I have to send it in?
 

bmw2nv2000

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yeah is that true about tuning it through your sct?
what happens if you have a sct already can I go through it or do I have to send it in?

I too am adding 3:55 rear end and was wondering the same thing. I got my SCT from Roe. I know they can send me an updated tune via email so I bet they can also adjust the tune for the gear change in that emailed tune. I will call Roe tomorrow and ask.
 

Camfab

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I wanted to do that 6 yrs ago, and if I recall Dan told me it was not possible. I think that is part of the BCM and not part of the engine controller. I have a brand new box that I never installed, so my mileage shows much higher than it actually is. Youv'e got to cut into your wiring harness to install that box, something I decided I would never do.
 

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