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The mkiv Supra Owners Club

Fitting speed convertor


Tommyd16

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Guest Roger NE

Aha - is that why the Main ECU requires a Speed Signal on the Pink wire - so it can LIMIT the top speed?

 

Originally I left this wire disconnected when fitting a 2JZ-GE in my Mk 3 . . . but kept getting an Engine Fault Light (and Fault Code said no speed signal)

 

So what speed is a JDM 2JZ-GE normally limited at?

 

I don't think Speed Limiting will be a problem, as the signal I have fed from the Mk3 dash is MUCH slower pulses . . . but it keeps the ECU from showing an error

 

(and apologies for hi-jacking your thread!)

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Guest Roger NE

So presumably, if you guys fit a 8:5 downscaler to make the Speedometer read in MPH, and fed THAT signal to the main ECU too, it would just limit the top speed to 180 mph?

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