Andy, it's the guy from Florida. When you say you have to reset ignition base timing after inputting the latency, are you referring to the timing in the ignition table or the timing when phasing the distributor rotor? Good video as customary, i understand what you were talking about💪🏆
Thanks again for the great video Andy. Could you maybe share which Picoscope and which Accessories (partnumber) you used for probing the Tooth and Ign signals?
I am very curious about spark latency with a gm TBI distributor and the different 369 and 048 ignition control module have built in latency and timing control. What i think im experiencing is a cross fire or cross spark issue in the distributor cap because of a spark latency issue at a higher timing advance.
I have another question, with the engine running, timing fixed and a timing light on the crank, can we simply increase or decrease the latency time until the crank and computer ignition degrees match? Thanks
Carburetors are a bit wasteful but make this much less of an issue. All though that is probably due to the excess fuel during the lean periods and the ability to change a jet or emulsion piece for fine tuning of the increasing demand with rpm.
Hello Mr.Whittle am regular viewer of your videos and I have seem them all but I have a question that am sure you will be able to answer some engines like the Nissan qr25de found in a lot of Nissans such as the xtrail and sentra vspec use a continuously variable cam timing which is very different from vtech and vvl so I was wondering if there was a way to control it using megasquirt ECU by means of pulse with modulation thanks
He gives an example based on the oscilloscope datas at the end of the video. There is 0.4 ms of delay wich is 10° of cranck angle acording to the oscilloscope.(360 ° divided by 36 teeth = 10° per tooth.) In its math he gives 3.7 degrees at 3750 rpm ,he just multiplied by 5 the idle 750 rpm values,but it's not taking in consideration that the increase in delay is not proportionnal to the rpm,it's increasing with rpm on his example.
