Can you please break down idle advance, mechanical advance and total advance on a slightly modified engine. Most run 6-8 degree idle, what does that translate to at high rpm?
Google 'vw 16v ignition map' should help http://i84.photobucket.com/albums/k36/cerips/Scirocco Storm 16v/16vignitiontiming.jpg All the advance is dealt with via the ignition ECU the dizzy is just a hall trigger.
In that case is there any actual difference if you advance or retard the ignition by say 3 degrees in the advanve curve up to max rpm?
Okay then is it know, say 2 degrees of advance at idle how much would that be at 6500 lets say? Would a KR dizzy fit and work on an ABF ecu and would I be able to advance the timing successfully without remapping?
the ABF distributor is used for cylinder 1 reference, if you mess with it you'll just confuse the ECU. if you want an ABF ECU re-maped properly you talk to a pro such as Eddie/Toyotec, or swap to aftermarket managment
Or the third alternative is the old 'clockwork' setup which uses weights and springs and centrifugal force. Proper 1960's stuff. Works for me though... Cheap, cheerful Jon
I installed a dizzy from a Seat ADL it work I can feel it, but from what I understand the knock sensors only give about 5 degree advance/retard so not a massive difference.
I have made the ignition independent of the ECU for simplification, avoiding this type of problem Jon
ADL dizzy is the same as a KR/9a one, 4 trigger windows. The ABF dizzy has 1 window and is only used so the ECU knows where cylinder 1 is from the crank sensor signal. What you have probably done is put the ECU into batch fire mode as it cannot make sense of the cam position signal from the ADL dizzy... if you want to adjust the ignition map properly, you need to get the ecu mapped. on the cheap end of the scale there are some generic chips on ebay, but they'll never be as good as a proper remap
