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Hey everyone I’m currently fighting an issue that I can’t really find any info on. I’m using a 05/06 ktuner prb ecu and 05/06 base harness in a k24a2 swapped civic. I have a cel for p0603 and the car was in limp mode. I checked all my grounds and charge harness over 20x and I had two other people look at it also. The other day I switched maps from k24 to k20 and limp mode was gone but car is really sluggish and breaks up but code p0603 is still there. Any info is greatly appreciated.
 

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Still having this issue? Seems like you have the right wiring harnesses, but I would still check that the ecu is getting the right amount of power. It can also be your ktuner hardware, possibly not getting the power from the ecu. Was this purchased used? Have you talked to Ktuner about warranty?

I was thinking of trying out Ktuner but I get mixed reviews. Let us know what's going on.

Thank you
 
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