For a guy who claims to have PHD you sure are denseIf you watch the timing pull on a SCT Tuner, I would say all Coyote Mustangs are tuned for 93 gas. Some of the people here are saying I am misunderstanding that active timing pull built into the ECU. Meaning it will jump to about 25 degree at WOT and will pull back to as low as 18 degrees at 6800 rpm. The Ford rep says that is the knock sensors at work but some of the people on this thread say it's the standard Ford programing that can be modified by your local IT guy that drives a bike to work.
It's the Ford guy with the PHD. The issue is here, does the advance pull from 3500 to 6850 rpm hard wired by a hard wire program with no input of the knock sensors or is it a micro second by micro second update by the active input of the knock sensors? Two ways to think about it.For a guy who claims to have PHD you sure are dense
It's the Ford guy with the PHD. The issue is here, does the advance pull from 3500 to 6850 rpm hard wired by a hard wire program with no input of the knock sensors or is it a micro second by micro second update by the active input of the knock sensors? Two ways to think about it.
There is one spark table, "modifiers" are used to refine the spark output, think of these modifiers as a filter. These modifiers are mostly temperature and load related. The hotter it is or the more load the computer sees the more spark will be retarded to keep the engine from being hurt. The knock sensors are for worst case senarios, and will often cause a code to set if they detect knock, because knock indicates a real problem, wether it be poor fuel quality or a mechanical failure.So your saying there is a spark table for 50 degree weather and a spark table for 100 degree weather? Would that be 10 degrees apart for say 13 spark tables from Detroit winters to Phoenix summers? It's my understanding everything is real time by the micro second. From Cam Position to EGT to Spark Advance to Spark Knock to Crank Position to RPM to Octane. Then when the Cams are turned in to each other at 108 degree lobe separation you get high rpm HP and when turned out to 114 degree to each other you get low end TQ.
This is correctWell what at least some people are saying for the Coyote ECU, if the timing at 3500 RPM is 25 degrees advance and the timing is 18 degrees advance at 6500 rpm, it will ALWAYS be that curve unless it's very cold or hot outside or some other factor like maybe a tank of 85 octane gas that the knock sensors hate. The ECU will never learn to go to 27 degrees advance and stay there with 100 octane gas.