I have an 88 mustang gt with an a9p computer the engine is an older 302 not an ho and does not run the ho firing order it has the gt 40 injection on it is the a9p computer compatible or do I need to put an ho cam in it and change the firing order
we did it with a truck.a ho motor in a non ho computer,we just swaped the plug wires around.it was a long time ago so i cant remeber all the details.but i know that we did it.i think the 2 cylinders were 180 degrees from each other in the firing order.so the injection events dont matter.
You will not be running on all cylinders and you will have an extremely rich running condition. Change the cam or put a non high output computer in it. I know this from experience, as I did this in my 86. You will have a difficult time passing emissions because of high readings.
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