I understand the Microtech has a built in MAP Sensor but when you were using the factory ECU, were you using the Factory EF/EL MAP Sensor?

yes i was sorry just understood,im guessing that was the cause but thid time around doing it proply,ill post a build thread soon

a friend has a simular issue in his el with a chip with big injectors tryed running it with out the chip wasnt bad didnt play up but was heaps rich his mech checked every thing ,plugs ,fuel ,tune, turned out the chip had been programed with the wrong tune to much fuel ,could try going back to the basics .try it with out the chip ect .