So i did a Ls-vtec conversion over the summer, after completion i started the car up and it ran mint with a chipped P75 ecu that was on the car when it was non-vtec. I just let the car idle and check for any sign of leak or anything and everything look good.

Since then the car sit the way it is, never driven or anything. I bought a P28 and had a new basemap burn since i switch from 550cc to 750cc injector and bigger turbo etc...

Now when i start the car up, it idle at about 500-600 rpm and run really rough (engine shaking) mostly likely because of low rpm.

I dont understand why it would thrown these code now when it was running completely perfect with the P75, is it because of the ECU?

I cant change back to the P75 to see how it run since the map on the P75 is for 550cc and i now have 750cc.

BTW,
Code 6= ECT, Water temperature sensor
Code 10= IAT, Intake air temperature sensor

 

hummm