i am buying a car with a b20 swap in an ek coupe. the cars idle is funny bouncing and a little high 900rpms and drops after coming off of it (letting off of the gas pedal. the car is converted to obd1 but the engine is obd2 the only thing on the engine thats obd2 is the distributor does that make sense? can an obd1 ecu run and obd2 dizzy? also i was told if i change the dizzy to an obd1 it will fix the idle... does that make sense?