So I've been chasing down an intermittant miss/bog for quite a while now and haven't been able to find the issue. I decided I was going to throw the car on the dyno on Saturday and see where my air/fuel ratios were and if I could see anything in the graph that might point out the problem. I just had the car tuned with one of the Trifecta programmers and was hoping I would see some kind of improvement. Well the car dyno'd a whopping 224rwhp and 241 ft-lbs.. The graph showed a fairly obvious miss, which got worse in the upper RPM range. That pointed me to the opti-spark. The other issue was that the wideband showed an A/F ratio of 15:1 all the way across the board. I talked to the dyno operator, and since I'm running an open Y-pipe, he said he was fairly certain that the probe wasn't reading correctly and picking up some outside air. I'm not quite convinced. I would think with a miss I would be running really rich, and the graph shows the exact opposite.

Anyway, I replaced the opti yesterday and went to hit the key and got a no-start. The starter solenoid wasn't pushing the gear out and just spinning freely. That's really strange since I hadn't touched the starter while doing the swap. I went out and bought a new starter. Then it cranked fine, but I still have a no-start. I've checked for injector pulse and spark and I have both. I also have fuel pressure. The opti does appear to be aligned properly, as I double checked to be sure the cam dowel was in the correct slot on the opti. I also went through and re-ran all of the passenger side spark plug wires to be sure that they were on the correct terminals. They are correct. The only fire I got at all was several small back-fires through the intake, which makes no sense to me at all. Is there anyway that the opti could be indexed incorrectly during assembly? I'm about 99% sure that the cam dowel is lined up correctly, which seems to be the logical explaination, but it seems the timing is WAY off. At this point it looks like I'm going to have to pull the unit and get another replacement. Anybody have any other ideas? It ran before this opti, it just had a miss up top...