Is it possible to burn a new chip with a change to the VSS settings, to adapt a T-56 VSS?

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'91 Formula
383CI Superram, Sportman II's
SLP Cam 214/224 .470/.490
Vortech V1 S-Trim with custom 8 rib pullies
5-speed
3.42
12.34@117.04, 1.91 60Ft.
on Drag Radials

 

The T-56 VSS sensor is different. Besides.. you dont need to make changes in the PROM to correct for a different gear ration or different pulse. You could and maybe should if you have the equipment since the ECM does base some of its calculations on MPH, but it's not super critical. I would worry about getting my speedo to work fine first then worry about the chip.

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1992 Z28 5.7 TPI

ZZ4 longblock
Harland Sharp roller rockers
Accel base and SLP siamesed runners,
52MM SLP Throttle Body
Hooker Headers & Flowmaster catback
MSD6A ignition
aluminum driveshaft
World Class 5-speed

 

http://www.delanet.com/~tgp/92Z28/02-730-vss4T56.html

This site has what you want to know although it seems to be down right now.

 

It aint down.. the website is just not there anymore !

 

Oh well, it was rather informative. Anyhow, I think what was done was to set the PPM count down so it would agree with the gears you have. You have to go to the particular address in the prom and change it and since every mask has it in a different place, I couldn't say where it's at. I know this has been discussed on this board before so maybe a search with "T56 VSS" might provide some help.

 

http://www.google.com/search?q=cache...+T56+VSS&hl=en

Google is your friend!