does anybody have a stocl bin for the 730 ecm $88? my car is a 91, 3.1L, auto. also, where do you change the fuel constant in winbin? one more question, is "730_atta.ecu" a good ecu file to use in winbin for my application? thanks for any help, i'm still trying to learn...got a long ways to go too.

The latest bin for your car is AZTY. There are copies all over the net. The fuel constant is BPC based. This is a term derived from the engine displacement and the injector flow. There is a table that is referenced to EGR flow for this term. Along with two others for crank and idle.

The ATTA bin is an $88 mask also. So the ECU file based on it should match. I've never used 730_atta.ecu but knowing it's origin I'd use it.

RBob.