Hypertech Chip

[DnaProRacing]

blue, any way possible you could program one for me? and if so, what is the cost? answer private msg please. ive tried superchips and jet chips so far, gonna try hypercrap next and then "if you can", the chip you can do for me. eventually i'll stick with the one that makes me the happiest...
oh, any suggestions on injectors? was thinking the stock replacement would probably be the best move. but what do I know???

[Blue Bowtie]

Your '92 should have come with a 16149396 ECM. That is a functional equivalent of the 1227727 ECM (weatherproof version of the 1227730) used in Corvettes and several other W bodies. It used a 256K UV EPROM for program ROM with a 2K backed S-RAM extension for electrically controlled transmission functions. The base engine parameters can be changed without even touching the transmission functions.

The label on the ECM outer case should indicate the service part number, as well as the stock broadcast code for the binary file used for that vehicle tune. The code should be in the format of four alphabetical characters, such as "APAB" or something similar. What code was originally installed?

[DnaProRacing]

a little delay there. come to find out, my issues were due to the ecm. have to replace the computer. ill get back with you after i sell one of the kids...

[Leighr]

Hey All !!
I have a crazy 1992 Lumina it is complete with a 3.4 Twin duel cam engine with a Hypertech performance chip. When it runs it runs well! Well here it goes, The fuel system holds a steady 40 psi. It cold starts good, when I first got the car it was coding the co2 sensor found that the wire was broke and repaired it this cleared all of the corresponding codes that it created except one Idle speed I adjusted the idle and cleared this. But here is the real kicker once the car warms up to operating temp. it dies as if the key was shut off you can even drive a couple of miles before it quits then bleed the pressure from the fuel rail and the car starts right up but if one attempts to accelerate it will die and the process starts all over again I considered the fuel pressure regulator but one would think that if it was bad it would just simply not function at all rather than part of the time. I have changed the temp Sensor I was told that it is controlled by the ECM and would cause the car to over feed with fuel due to the warm up idle controls in the ECM and cause it to consequently vapor lock the engine so with no codes and this intermittent issue I do not know what to do I even checked to see after it dies and restarted that the exhaust was flowing well and it seemed fine thought maybe a converter issue. By the way the car will set in the shop and idle as long as it has gas and runs like a new engine. I am about ready to take it on a suicide run and it has a new fuel filter just to rule this out. I wonder if the chip or ECM is killing the car??

[Blue Bowtie]

Leighr,

Welcome to AF.

Please refrain from posting in threads more than 90 days old unless you are the original poster and have an update. Posting in old threads merely confuses those of us who can't read the dates without bifocals.

[jeffcoslacker]

Wish I had investigated a little further when mine had that little "spell" a while back...1997 3.1 LS, it began with the CEL coming on, then I noticed the idle was just a bit more rough than the normal smooth as glass...but when you trounced it, man did it respond! Felt like I gaided 25 hp or something...

There was a dip in fuel economy, but not terrible.

I don't remember the code numbers it set, but they were "Fuel Trim Rich" and "Coolant Temp Outside Expected Parameters" or something like that...

But the problem went away after a couple of days, and I never found out the cause.

Wouldn't have minded having a switch to flip to put it in that mode on demand