Hi, i have fitted EFI to my S2 RST with cosworth management, but the car wouldn't start on a CVH firing order which is 1-3-4-2, so i changed the firing order to 1-2-4-3 which in the Haynes is an OHV order. it started on this firing order but ran really lumpy, miss fireing, and backfiring. Can anyone tell me what is the correct firing order for EFI and what sort of chip is needed to make it run correctly??
Any help very appreciated!!
Cheers!