Quote:
Originally Posted by thE_iyE
The reason I'm hesitant to buy a used ECU is that the 'unchangeable' values are technically alre and dy written for a different car, and if they're written for that car, whose to say my car wont trip a CEL again for not having the proper values?
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It's not that they're unchangeable. The system has to sense a normal condition before it'll adjust those values. A used ECU that came from an engine with a healthy vvt servo system should be close enough that it'll adjust itself to your engine.
The problem is that there are no guarantees. I have @
rusty959's old ECU and plan on messing with it sometime this spring. I wonder if manually slewing the phasor with Techstream might somehow get it to catch a normal condition. I seriously doubt it but the thought has stuck in my head for a year now.
If that doesn't work, then plan-B will be to rig up a delay line to trick the offending channel into thinking that the valve timing is ok. Then I'll slowly back out the offset while the table relearns itself the other direction.