I have an 06 4G69 Eclipse with a custom turbo for about 5 months now. Two weeks ago I started getting misfires at idle. We looked at the sparkplugs and they look good. I didn't check the gap though. Now it's getting worse and you can feel it even when driving. The engine layout is similar to 4G63, except it's a SOHC. We did a boost leak test and didn't find anything leaking. Anyone experience something similar?