95 delsol Si with JDM b16a swap w/ stock p61 ECU (b17a gsr)

I blew my headgasket a while back, so I got the head milled, new headgasket etc. When i was bolting the intake cam carrier i noticed it was getting a lil hard to bolt down. Turns out i had the Dizzy 180*s from where it should be... so i fixed it and continued to torque down the carriers to OEM tq. specs.

anyways im getting a code 4 now and it idles very rough (think v8)... I tried rotating the distributor and if i bring it all the way towards the front of the car the idle gets better (still not good tho) and if i rotate it the other way the car will almost die instantly.

That makes me think i am off a tooth on the cam timing but i am almost positive the cam timing is set and tensioned correctly.

Can a code 4 cause a car to run that lopy? The dizzy worked fine before i changed the headgasket and i didnt even unplug it (i couldnt get the connector undone, so maybe wiring)

the car has NEVER thrown any codes the ENTIRE time i have owned it since 03 (until now) and it has NEVER had an 02 sensor (weird)...Now im getting code 1 (o2 which is expected) and code 4