I have been following your ECM story with great intrest. I have a 1992 Supercoupe that I bought with a blown engine. I installed a 347 stroker motor, a Summit kit with I beam rods and 10-1 pistons, a CHP lower end girdle, Trickflow Heads, roller cam and roller rockers and JBA shortie headers. I'm using a Crane HI-6 ignition and LX92 coil with Taylor wires. I still have the stock intake, injectors and MAF. I kept the stock 5 speed and clutch from the SC, I haven't broken it yet. I built a custom front exhaust with high flow cats up front leading to the Flowmaster rear duals. In the rear I put 3.73 with the Ford limited slip rebuilt. The car runs great but I cannot get it to pass Massachusetts emissions, the HC is just over the limit at low speed with the CO and NOX well below, once the car is up to speed all is well. What do you think? I wanted to try and adjust the computer but as you know there is very little support for this ECM, mine is an H2M1. Next on the list should be a performance intake, and throttle body, larger injectors and MAF. But none of this can happen until I pass emissions. Do you think the computer change, to the T4M0, would help me to correct this or am I overlooking something simpler? Thanks.