Hey guys, i have just recently finished a 94 OBD1 b18c2 swap into my 99 ek1 hatch.

Using an ek4 harness.

Ive got a p28 chipped with hondata s300 ecu, also using a jumper from OBD2a - OBD1.

Now car runs fine, ive uploaded the jdm p72 base map on hondata. I get the o2 sensor fault and knock sensor fault. I disable both through hondata.

But vtec wont engage.

But when i go to use my apexi power fc ecu vtec engages perfectly fine..

So i know my wiring is correct..

Any help would be deeply appreciated.

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