I have a 13b n/a. I recently removed the emission(my vacuum nest) well I took off the BAC. It seemed bad so I put it back on. Now I can get the car to stay running once it's started. The problem is when iy warms to operating temps, it's starts pulsating @ 1000-2000 rpms. I've tried setting the timing, I've tried the screw both on the manifold and by the maf. I've checked my intake and vacuum lines for leaks I don't c any. If anyone can give some advice I would really appreciate it. Very thought counts I'm out of options.

 

Both the timing and TPS are most likely out of spec. How did you try to set your timing?

You should not even be messing with the AFM screw.

 

tps most likely

 

the screw by the Maf is the Variable resistor screw.