Beige injectors are for a 195bhp chip. If you've got a 165 chip with beige injectors it will seriously overfuel.

I would check your other sensor connections too. Strange things can happen to the idle if one of the other sensors is not connected correctly. I'd check and adjust the static idle too...

Oh, - and IIRC you have to swap a couple of wires in the ECU plug to go from OFAC to OFAB. Did you do this? Details of which wires need swapping are on rsbible.co.uk.