So playing around with 93 LT1 PCM. 161592I78 ECM Information $DA2 $DA3 using Moates.net APU1 and Tuner Pro RT (same problem with fast burn)


I have 2 aftermarket chips. One by Nasty28 and one by Hypertech. Along with factory BDZL all 256 chips

I can read chip to bin, save bin, modify bin. All chips work in car correctly.

I burn it to a 512 chip, everything verifies fine but ......

When you turn car on it makes for system clicking under dash, and as soon as fuel pump shuts off the cooling fans come on. It will start, but idles to high and has not throttle response. If I pull it out and read it, looks exactly same, but won't run correctly in car.

Somebody please tell me what I am missing.

Thanks for any help.

Vince