In my 87GT 3800SC setup (Getrag w/ Stock Fiero VSS), I want to properly adjust my OBD-II speedo setting. I know the typical fiero PPM setting is around 4,000, but is there a calculator to specifically adjust for my 17" rims with 45 series tires? Or can someone just tell me what the setting should be?

- Bryan

http://www.miata.net/garage/tirecalc.html

I could get you an idea if you had the full tire size so I could calculate height.

No matter what tire size you decide to use; assuming that they fit, there is a table in the PCM program that will set the correct calibration for that tire size. I know that it works for the 4T65eHD but I am not certain how well it will work with the stick.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "