vss mph

[86SS86LS]

Due to the previous owner installing a 145 mph speedometer face plate and reducer, the vss reads low by around 40%. Because of this, the torque converter will not lock-up (until I get up to around 90 mph). Can I get my TT chip modified to lockup when the vss reads 35 mph....or would it be easier to go back to an 85 mph speedo? Other than torque converter lock-up, does the chip rely on accurate mph reading for anything else?

 

[Eric Stage I]

Yes, the chip can be changed to compensate. The chip uses MPH for many other features also.

 

[86SS86LS]

What other features of the chip reference mph and can you compensate for them as well? I am seriously thinking about going back to the 85 mph speedometer, the odometer also read low.