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gow to set Gear ratio correctly

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gtr2626

Post subject: gow to set Gear ratio correctly

Posted: Sun Jan 15, 2012 12:30 am

Joined: Thu Jan 05, 2012 9:51 am
Posts: 3

i have followed the manual and set the calculation.

what is GPS speed? is it the sensor put on top of the car and connect to IQ3?

i have tried the calculation table from the software and input the gear ratio and calculate the tire rollout.
fail also.

does anyone hav the gear setting for GTR R33 with 265/45/18 rim?

please help.

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tim@racepak

Post subject: Re: gow to set Gear ratio correctly

Posted: Wed Jan 18, 2012 8:16 pm

Joined: Mon Oct 29, 2007 12:02 pm
Posts: 1474

GPS Speed is generated by the GPS inside the IQ3 data logger dash. If you are utilizing the display version, then you will need to obtain speed from another source..such as your EFI unit (if you are interfacing it with the dash) or an external wheel speed sensor. You will also need to select the channel you are utilizing for speed, in order for the software to calculate ratios (and have a working tach signal also set up and selected)

Thanks

Tim

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