I installed an ECM from EBL Flash and tuning with TunerPro software on my '94 K1500 P/U with a 350 TBI. I did not have this problem with my stock ECM and it started as soon as I switched.... I have to crank the engine for about 25-30 seconds when it is cold and when it is at operating temp it will not start at all. I have noticed that it starts as soon as the oil pressure shows just above the red line. Is there a way to tune out the oil pressure switch or is it a problem with the sensor? How would I go about fixing it? Thanks.