writing over trifecta

[Dayhoff35]

ok so ive been searching for a little and i couldnt find anything. I think i might have seen in one thread that writing over trifecta might brick the ecu, and i cant find that thread again. I was wondering if this is true. Also if i flash back to stock with the trifecta cable will that take care of the problem? Im asking for a friend i wrote over mine before i knew anything could happen, but idk if i was just lucky. Thanks.

[PopUpBlocker]

Sorry for not having an exact answer. Here's some info though....
http://www.hptuners.com/forum/showthread.php?t=36017

[nhanson]

i saw on CSS.net that if you use the cable to flash to stock then you are able to have access.

[Dayhoff35]

yeah you can flash to stock with trifecta or write over it with a stock hp tuners file

[PSYKOSTEVO]

The problem I've encountered with some of the cars when trying to overwrite or even read a trifecta tune on the 2.2L cars is that they were flashed as a totally different type of car.

Probably Vince just working with what he already had that worked.

I tried to read a 2.2L Cobalt, and HPTuners could not validate because the Cobalt was trying to tell us that it was a different year Saturn Ion. No big deal for the car, but a big deal to HPTuners when trying to verify the tune before letting me save it and modify it.

I have no idea if this will give you problems on other engines too with Trifecta.

[HNRClothing]

I think you can write entire over the whole thing. IDK why you are trying to read a trifecta tune, its not going to work, you wont see anything.

[PSYKOSTEVO]

I think you can write entire over the whole thing. IDK why you are trying to read a trifecta tune, its not going to work, you wont see anything.

Because when the 2.2L support for HPTuners came out that was the only car I had near me. And I had to have some sort of initial tune to write with, or else where would have been nothing to modify to write on top of the trifecta tune.

[Mongorat427]

I did a write entire with no problem on my 2009 ss

[HNRClothing]

ok that is what I thought you could do.

Thanks for the clarification.

[bonylad]

I had the same problem. Vince had told me it wasnt locked but it was. Turns out I wasted credits licensing the PCM so I could try a write entire even with a matching os. So I got pissed since I didnt have the cables to flash back to stock.

I bought a ZZP 1.0 PCM which was tuned with HPT already and unlocked. Went from there.