HPP3 Weird results
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TECH Apprentice
Joined: Aug 2002
Posts: 335
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From: northern cali.
HPP3 Weird results So my car got a custome tune with a HPP3 tune installed in it also about 2 years ago. So i got the bright idea to take off the Hypertech programming so I can sell it to someone with less mods. I went to change the 02sensors, swap for fresh plugs,and reset the HPP3 back to stock so I can unlock it and now my car runs like crap on open loop then it settles when it goes into closed loop. I also got a P0300 code and now its trying to read the aftercat 02 sensors also and giving me the code for it. I had those 02s deleted with the tune. So it leads me to think that the Hpp3 did an overide to the custom tune. What do you guys think?
It has been years sence I were in that boat, tring to remenber just how I did i what ever it was it woked perfic. I was running HPP3 and my home tune with LS1EDIT, I think I read the PCM with both HPP3 and LS1EDIT tune installed, save this read as
" BOTH" then unload HPP3 ( UNLOCK) after which reflashed the PCM with saved file "BOTH" then sold the unlocked HPP3, person who bought the HPP3 was happy and I was happy with my upload of file "BOTH"
good luck IT can be done
Johnny
" BOTH" then unload HPP3 ( UNLOCK) after which reflashed the PCM with saved file "BOTH" then sold the unlocked HPP3, person who bought the HPP3 was happy and I was happy with my upload of file "BOTH"
good luck IT can be done
Johnny
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 335
Likes: 0
From: northern cali.
fore it got tuned . Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 335
Likes: 0
From: northern cali.
It has been years sence I were in that boat, tring to remenber just how I did i what ever it was it woked perfic. I was running HPP3 and my home tune with LS1EDIT, I think I read the PCM with both HPP3 and LS1EDIT tune installed, save this read as
" BOTH" then unload HPP3 ( UNLOCK) after which reflashed the PCM with saved file "BOTH" then sold the unlocked HPP3, person who bought the HPP3 was happy and I was happy with my upload of file "BOTH"
good luck IT can be done
Johnny
" BOTH" then unload HPP3 ( UNLOCK) after which reflashed the PCM with saved file "BOTH" then sold the unlocked HPP3, person who bought the HPP3 was happy and I was happy with my upload of file "BOTH"
good luck IT can be done
Johnny
When you connect the HPP3 and tell it to go back to stock, it overwrites the tune in the car with the stock tune that is in the HPP3... so, yes, you overwrote your custom tune and lost it...
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 335
Likes: 0
From: northern cali.
