Okay i have an 05 ap2 with the pwjdm intake, testpipe and t1r em limited single 70mm. Just went to get my car tuned with the vafc2, we had issues with the harness, it threw a code i believe it was 2647(dont remember exactly) then we fixed one bad wire and it ran good no codes. Had the car running fine for 4 rainy fairly cold days, just yesterday it was finally nice out(60s) i was about to hit vtec and as it was about to cross over it stumbled didnt let me vtec and threw a code 2647(vtec,oil pressure, high voltage) i checked the oil and got 2 diamonds on the stick, i know my maint. Light just came on but i have oil. Today the light went off, now could it be the tune is too lien, the harness or the oil? Any help from anyone with experience would be much appreciated...

 

There is chance the combination of not having full oil and a lower VTEC could lower pressure enough to throw a CEL. Fill up the oil and try again. After that, unplug the VAFC and try again.

 

Im going to do an oil change with motul oil this saturday, use a smaller magnetic oil filter to increase oil pressure a bit. Is it a bad idea to drive normality(not babying it) for now since the light is gone? And if i unplug the vafc the ecu goes back to normal but if i plug it back in does the tune stay in the vafc?

 

Did you adjust vtec engagement in the vafc?

 

Don't use a smaller filter, even if it helped you would be covering up a potentially serious problem that shouldn't be there. My VTEC comes in 3100 RPMs, you should have PLENTY of oil pressure wherever you are engaging VTEC.

No one can tell you it's safe to drive a car that has had an engine issue!

I am not an expert with the VAFC, but if I were to unplug my AEM in the way I suggested I wouldn't lose anything.

 

Yes my vtec engagement is at 5300 now, and the filter is a tiny bit smaller so im not doing it to fix the issue, just was planning to run this filter. Since the cel went off theres really nothing i can show the tuner, it could have been anything. Im gonna change the oil and see what happens as of now the ecu is reading good i guess. I dont realy know what my tuner can do for me