1995 Ford Mustang

Hi there,

You may have a problem with the calibration and duration of injector pulse as you have mixed and matched parts from two differing engines, I am sure that the Cobras will run different injectors to to Mustang std ECU you are running, doing this sort of match up can be a real headache. You may want to start with an exhaust analyzer test to see if it is running lean, and also see if the software on the ECU will do live data readouts with a good quality scanner, this way you can map out the systems one at a time and compair with each engine std data to see if all your parameters are with in spec,

Mark (mhpautos)