BGTV8 VQ40HRGA Race engine build

BGTV8

So, we have an answer

Firmware supplied was for USDM base/touring model ............. as the original development car was a touring model

The AU Z34 is "Sports" spec ................

On the 'Sport' models you have a 'clutch high' (pin 43) and 'clutch low' (pin 41) in the ECU.

Nissan quite literally programmed the BCM different between the Sport & non-Sport models. On either model there is a clutch position on the CAN *from* the BCM (how the current firmware package is receiving it now) so the BCM *does* know when the clutch is down. However on the Sport models it waits for the ECU to set confirmation bits of its own before it cranks -- on the non-Sport it doesn't care and as long as it seems simple CAN communication from the ECU it will crank.

What we were seeing with the original firmware package was the BCM dropping power to the ECU when it saw a crack request in the absence of the CAN msg from the ECU saying "I know the clutch is down" ......... what a crock ......... a new firmware is being built and once Motec-certified, we have it in my car.

Anyway, that should mean we are ready to fire the OEM engine with the M150 early in January. We are intending to run a full tune to see what the Motec can do for us ............ and then .........

We will fiddle with gear recognition and and then traction control via the M150 before pulling the OEM engine and installing the Quaife and VQ40HRGA engine ......

Rusty

racecar=headache

Excedrin headache number 43.

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