Does The Later Gti6 Ecu Have A Diag Light Output?

[Super Josh 4]

I've just swapped to a later style '6 ECU and the diag light doesn't come on with the ignition anymore.

 

Is this a faulty ECU or does the later ECU only put on the light when it detects a problem?

 

 

Cheers,

 

Josh

[welshpug 1,620]

they work the same way as the earlier ecu's, but may be wired differently, might be something to do with the diagnostic port wiring, works fine in my gti6 converted zx.

[Super Josh 4]

Scrap that, it's working fine now Maybe it doesn't light up the first time you power up the ECU to tell you it's in 'learning' mode?

 

Also noticed that the later ECUs seem to have a rev limiter that cuts in a couple of hundred RPM lower down the scale

 

 

 

 

Josh

[welshpug 1,620]

yep that's right, IIRC its 7450 ish on early ones, 7250 on later ones but when the change was I don't know, generally perceived to be from P1 to P2, not that there's any point in taking them that high, peak is mid 6's!

 

why the change?

[Super Josh 4]

why the change?

 

I've had some strange rev counter behaviour, so changed it as part of the trouble shooting

 

 

 

Josh

[Spiky 37]

peak is 6950, well on mine anyhow