Diablosport Forums

recently purchased a 99 navigator. it was running fine then started misfiring. took to diagnostics they had problem hooking to computer. they could not diagnos problem found chip in computer. unknown Diablo chip. problem resolved, loose fuel injector line. now idleling low. think when attempted to diagnose did something to computer. can you advise what chip i have and what i need to reprogram. i was told i need a handheld programmer. will this programmer restore computer to factory and reprogram chip?

Try posting any info that is on the chip. There should be a part # or something on it.

If you have a chip, then you will need to find a CMR dealer who can reprogram it. Otherwise, I would ditch the chip, and then put a regular Predator on it.

thank you, will remove chip this weekend and post info. what is a CMR dealer?

if i purchase a predator, will i have to get the computer reprogrammed to original before installing the predator?

CMR is ChipMaster Revolution. It is the tuning software that dealers use for doing custom tunes and for programming tunes for the chips. Sounds like you might have a DeltaChip.....

Make sure you don't damage the chip upon removal. I am not entirely sure, but the truck should return to stock when you remove the chip. Is the chip inside the PCM, or does it plug into the side somewhere?

When you remove the chip, the truck should return to stock programming. Might want to check with Tech Support at 561-908-0040 and see what they say before you do anything.

also remember tried removing chip and would not start without it.

the chip is inside the PCM, when removed would not start without it.

If it will not start without the chip, there is another issue with the PCM.

It will need to be reflashed at a Ford dealer to correct that issue. After that, the chip may need to be reflashed to work with the new calibration from Ford.

how do i get the chip reflashed once the PCM is reflashed? do i need additional part or accessory? i was told i need a programmer. is that true? if so where can i get one and which one do i need?

The chip can be reflashed at most of our Ford CMR dealers.