I don't want to fit a a commercially available delimiter/speedo conversion as I don't believe the signal 'chopping' approach is the corect way to do it.

Has anyone investigated the possibilities of doing this conversion as I would suggest.

 

Firstly what I would like to do is remove the speed limiter in the ECU to remove the top speed restriction, in order to do this I need to know the location in the ECU chip that this data is held or if someone can supply a 'deristricted' chip I may be able to locate and modify the information.

 

Secondly it should be possible to modify a KMH the speedo to read in MPH by adjustment of the output voltage.(i.e resistor change,I think I saw a similiar mod for Supra's.) Again if I could obtin an MPH speedo and compare it to an KPH it may be possible to obtian the info to carry out the conversion.

Anyone tried this before or have any info.

 

speedlimiter-address: &H7FA5 (multiply value by 2 to get the speedlimit in km/h)

 

revlimiter-address: &H7FB4 (Multiply value by 50 to get the revlimit)

 

I can't help you with your second question, but as far as I know the speedo in the Zed works with a clock/pulse to show the speed and not a voltage.

 

 

[This message has been edited by lymon (edited 17-08-2002).]

Thanks for the info,I'll get the chip desoldered, read the data and reprogram a new chip next week.