On a 1997 b20 motor being swapped into a 1994 dc2.. does this pcv look correct? I'm using a stock LS manifold and I ran into some idle issues after firing the motor up for the first time... the car is reading no CEL.. the rpm keeps jumping up from 1500-2500 rpm. Any clue ?

IAVC was cleaned out.

throttle cable too tight?

checked that before firing the motor up the throttle cable is fine.

PCV is routed correctly if the other hose is attached to the intake.

Have you checked for vacuum leaks? If not that sometimes the seat in the fast idle valve have been known to come loose causing a high idle.

do you have tps and map sensor plugs mixed up?

My brother made a mistake that had the same symptoms as you're having.

He had the IACV plug and the purge solenoid plug mixed up. The idle was going up and down just like your explaining.

Maybe?

Your hookup of the PCV is correct.