overwriting HPT COS

[GMPX]

so let me get this right, my mate has a gts (e38) that been tuned by hptuners with a 2 bar tune. its not locked as i can download the tune, but not read it (so custom hptuners os).

can i do a full flash with a stock os with efilive? to get it running again

Yes you can but you need to be careful, if he's HPT custom OS was say 01250210 does that mean anything to you? It doesn't to me either and this is where you can get caught by programming in the wrong year stock OS. This is where access to TIS2WEB is useful to get the stock program back in.
I know this is in the GenIII section but as we've digressed to E38's I'll mention that I've unlocked several E38's with HPT custom OS's and figured out what the stock OS should be, here's a short list (Aussie cars).

HPT = Standard
---------------------
01250210 = 12612381
01250219 = 12619078
01250223 = 12624402
01250228 = 12633016

Well I hooked up my efilive to the PCM and it was able to get the PCM details i.e op' system etc.

But I am not able to (Tune tool) Flash>Read calibration.

Does that mean the HPT tune is locked as well?

That means it is locked if the read process does not start.

Cheers,
Ross

[ringram]

RoadRunner time then mate. Or Jessie will sell you a cheapo LS1 PCM.

[Tre-Cool]

Cheers Ross.

I'm getting him to swing past later today, so will get a screen shot of his ecu info, as it turns out it's an my09 gts and not 07.

[GMPX]

You 'have' to use the correct year / model cal or you will run in to trouble, eg, don't put a Ute calibration in to a GTS.

[drdarthinvader]

there must be a solution to every problem heres a crazy idea! total pcm format?

[Tre-Cool]

You 'have' to use the correct year / model cal or you will run in to trouble, eg, don't put a Ute calibration in to a GTS.

Ross do you have a calbration for the following I could use?

OS=01250223 -Hptuners OS ID=AA
CAL=12624488
BCC=YRTM
Eng op id= 92230186
eng diag = 92230181
fuel = 92230177
system=92230179
speedometer =92230175

[ScarabEpic22]

From an earlier post by Ross that HPT COS is a regular 12624402 OS, but if you are looking for a calibration/OS to use Im afraid I cant help you.

[Tre-Cool]

From an earlier post by Ross that HPT COS is a regular 12624402 OS, but if you are looking for a calibration/OS to use Im afraid I cant help you.

yeah i realise that and holdencrazy has a os for a 09 holden but it's an auto.

i assume i cant use that as a base?

[GMPX]

Tre-Cool, punch the VIN in to CalID and list what it should have in it. The segment part numbers you listed aren't the same as the 12624402 based GTS M6 tune I have here.

[mistermike]

I had a custom OS HPT on mine. I had to flash it back to a standard OS with HPT before I would write with EFI LIve.