98 Trans am with speedo calibration problem

[uncle buck]

My car is a 98, and i know is specific to a 98 and 6speed. I am running a 4.56 gear and 26.1 tire height. For 98's, you have to manually figure the number to input. It is 5.72.
Problem is that HPTuners wont allow an input lower than 6.00

Can anyone give me the manual numbers to input so the speedo will be correct?

I dont know how to determine those numbers?

Thanks
Brian

[EC_Tune]

You are at a limit of the speedo. The gear/tire combo you have has exceeded the limits for the PCM to adjust.

[uncle buck]

could i manually input numbers like this thread?
http://www.hptuners.com/forum/showth...highlight=4.56

Thanks

[EC_Tune]

You might be able to just take into account that you are dealing with 17 pulses/rev instead of 40. I think you will run over the limits though. What the heck, give it a try!