timing tuning problem

[jondee86]

Interesting thread this

I have been doing some reading, and as far as I can see, there is
only one way the ECU could give you 44 deg advance. You would
have to be operating the engine at high rpm's without any load.
Or alternatively, be operating the engine at high rpm's with load on,
but give the ECU a MAP signal for low load.

Looking at the ignition mapping for a standard OEM 4AGE ECU, there
is a big increase in ignition advance if you take load off the engine
at high rpm. So it might be worth checking to see if your MAP sensor is
sending the correct signal to the ECU under varying manifold vacuum.

Cheers... jondee86