89TII

I've been having this problem where my car hesitates at any rpm
before getting into boost. This happens especially on the freeway. So a few months ago I put in NGK platinum plugs. The car ran like crap afterwards, but somehow I forgot that the plugs were in.

The other day, I went to check my timing and found that my Front Leading plug was firing intermittently from the coil, and my Rear Trailing wasn't firing at all. I quickly changed the plugs back to normal NGK plugs and got my rear trailing back, however my from Leading still fires intermittently. I get steady pulses, then a hiccup.

Does anyone have any suggestions? I think this may be the only problem I have in order to get the car working. Can bad grounds cause this? Please help

 

change coils and wires?

 

the coils have been swapped with known good ones. The wires are just over a month old. The plugs went in yesterday.