Stevieh62000

Right im having some issues and it would be great if you guys could help.

Ive recently installed a B18c6 into my EM1 civic. It was a straightforward swap with everything being compatable including the wiring loom.
Its a pretty standard setup with just breather mods and a lightweight flywheel.

At first I installed a chipped and socketed P30 which had a custom map for a B18c6. The map wasnt great so I quickly ordered a basemap chip for it.

Now with the basemap chip installed it immediately brings up the engine check light and gives the code 22 for "vtec pressure valve".

So now vtec doesnt work and I cant understand why as it was fine with the previous chip.

any ideas?

Stevieh62000

So it turns out I dont have a 'vtec pressure switch'. I guess the other chip had a bypass programmed in. How do i bypass this? Mod the jumper harness?

JRCivic1

Contact whoever you got the basemap from and have them make you another one with the VTP switch turned off... then you will be fine.