i converted my car to efi cosworth management and have had no end of wiring issues/loom problems. Havent managed to get the car to fire up yet, with the monitor giving all sorts of weird readings

One big bit of advice i can offer from experience here is wherever funds allow, use brand new parts, not 2nd hand internet buys. On my 2nd cossie loom after first one gave me trouble and i striped it down to find all sorts of horror fixes/repairs/bodges which i couldnt tell when i bought it as whoever had it last did a really professional job of taping it back up lol . Wished i had bought a brand new made up loom first time round from Ryan off here .