Hello all,

We are working on a 350 chev that came out of a 91 burb with the 7747 ecm that was transplanted into an off road crawler. We have the orig ecm and stripped off some sensors from the wire harness like egr, esc, knock sensor, vss. What we have left is MAP, TPS, IGN mod, IAC, coolant sensor and oil sensor. We tried to fire the rig up with the stock ecm and the injectors were delivering way too much fuel. In the process of finishing other modifications to the truck I modded the ecm with a zif socket and emulated a dloaded bin and tried to fire again. Same results with too much fuel. We swapped injectors, TBI, and even tried a variable pressure regulator in the throttle body. Still too much fuel. (even did a redneck regulator by pinching the fuel line with vice grips to the same result) The fuel pump is 40psi capable.

So, with the stock bin this thing just dumps the fuel and won't start. It sprays a big amount on crank but as it tries to fire and revolutions quicken so does the amount of fuel to the point it floods and can't start. At this point we can disconnect the injectors and crank and the engine will actually stumble for a few seconds while burning off all that extra petrol.

A couple of questions, what modifications to the bin do you see off hand that need adjusting with the deletion of all those sensors? And, can you think of another reason why it's delivering so much fuel?

Thanks for the help guys and gals!!

Jon