Please hear me out: I ordered an R35 coil and bracket kit along with a custom harness. I'd like to keep the companies nameless for now (coils and bracket kit was separate from the custom coil harness). I installed the kit following the instructions to the last letter. When I tried to start it, there was no spark. A little searching and found a simple mistake. The custom harness had the three wire plug with the power and ground wires switched. I flipped them and I then had spark. HOWEVER it ran like garbage. Hesitated to start, idle was rough, and it died as soon as I applied any but of the clutch. It acted as if it were rich. The brand new plugs were fouled. I added a picture of one of the. That is with less than 3 minutes of running. I contacted the company and they sent me a replacement harness but it still ran like garbage. I then checked that I had proper connection with the plugs and new coils. The spring in the custom stalks were the correct length and as the plug was pushed in, the spring moved. The resistors are also in place and making contact. Both of the other connectors were secure along with the ground. Even replaced the R35 coils with another set of brand new ones. I pulled the kit and put the OEM ignition back in. It started up no problem. But it wasn't until tonight that I tried to drive it. It now acts the same as it did with the R35 coil kit. I couldn't even drive it out of the garage without it falling flat on its face. Smokes like it's rich, new plugs again fouled and now won't start. It spits and sputters but dies right away. When I started this whole thing, it was fine! No problems. It has been on 2 long trips with in the past 2 months. I only went this route as the clips were brittle and decided to upgrade. I do not understand what happened! Ignition timing was not changed either. I also switched out an known good ignitor and still no change. Is there a chance the power/ground wires switched in that harness messed with the ecu? Help! I'm pissed!