Hi all,
since I last posted the MX5 has had a new head with loads of developement.
But we still have a problem.
We are getting a pretty bad misfire, randomly, throughout the rev range. Accordingly I'm not prepared to fire the N2O into it until the issue is fixed.
I've taken ref/sync captures and Mark and Ross should have them (Lee from MPC is the tuner).
Since those ref/syncs were aquired I have replaced the trigger point on the cam gear to clean up the sync. It has, nice square wave throughout the rev range.
But the misfire continues ...... if anything it may be worse now than it was before
Just as an adjunct I have piggy backed the ref/sync signal wires back to the original ECU to give me the in-dash tacho. Since rectifying the sync pickup point to give a single pulse (rather than a double.... sometimes) the indash tacho jumps between 1/2 actual revs and actual revs. The jumps don't seem to corralate with the misfire. Does anyone know how to stabilise the indash tacho?
The tacho is secondary, my main problem is the misfire.
I've got another dyno session planned for wednesday, but would like ideas or others experiences or possible solutions as I'm running out of $$$$ to spend on the dyno.
Cheers
Bazz