Civic SI 9th gen custom gear ratio

[Garrett_si]

Hi guys, with Flashpro manager we could change gear ratios like on 8th gen, but don't seem to work, wheels sensor work all good with exact real chassis speed

I have Syncrotech 1-6 full gearset, 1-4 are short ratio, with 4.0 Final drive

1st 3.13
2nd 2.167
3rd 1.647
4th 1.286
5th 1.043
6th 0.851

[Spunkster]

Are you referring to the dash and datalogged speed not being correct?

[Garrett_si]

Yes, Dash display and Flashpro Manager VSS are wrong

[Spunkster]

I'm sorry, but there is no way to correct this from the ECU as it doesn't output these signals.

[Vanwille]

Sorry if late to the party. Spunkster is correct there is no way to correct mph via the input into flashpro, a Dakota Digital sgi-100bt must be wired into the the VSS on the trans, then you can dowload the app and calibrate via satellite speed which is eerie accurate. As that is the setup that i have done, it easy, the only real downfall is it must be mounted in the cab away from the elements.