No one is down on pressure but it’s no 4 crank end that’s missing

remove any other coil engine definitely gets worse but as said no 4 I can pull lead out and engine stays the same

ive put new plugs in

I will say I did have a omex Rev limiter installed even though it wasn’t switched on I couldn’t Rev past 2.8 k I them pulled the fuse on it completely disconnected from any feed car would Rev up fine but miss firing

and sensing out some massive bangs but that could be from cylinder 4 not firing correctly