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Message: <blockquote data-quote="leforte" data-source="post: 289679" data-attributes="member: 1943">welcome to the club. for your ignition issues, check on your engine grounding, since its a JAP import, it may have been sitting at the yard for a while, it may be badly corroded. a weak ground will give you a weak ignition ... anyway did your issue appear before the change of gears at redline??? if its just a slight judder or shutter mid-rev, it could be just a leak at the manifold gasket. did your installer use enough of the ess provided blue sealant to make sure its air tight? what version TS2 software are you on. did you specify to absjorn/hans its for a JAP spec.?anyway, should it be the ignition system, first check the resistance of your coils, if its Ok, then you can either replace the plugs with normal copper or silver plugs or a simple regapping of the current plugs to a closer tollerance of 0.22" would help. the factory ignition would require a higher energy to jump the spark gap in a force induced high compression enviroment. so if you run the factory recommended gap, it may overtaxed the ignition system resulting in a slight lag as no spark is produce for that moment. Irridium plugs or platinums plugs are really poor conductors of thermal and electrical energy. these plugs are mostly used for their long wearing durability due to their material hardness and density, but not for performance. for a FI engine, the most suitable plug would be the humble copper or Silver plugs, they are the best electrical and thermal conductor and requires less supplied ignition voltage to generate a spark when compared to irridium or platinum. i would not recommend the beru-x or volker as its just the same as the denso you are using now. try BRISK silver or nology racing silver.if your  ignition is weak due to the plugs, the plasma coil will work wonders, you can call calvin tan @ eurocarmotorsport to order some. but do make sure there is no air leak and your ground strap is ok first.<img src="http://farm3.static.flickr.com/2019/2527969187_dba526edf0.jpg?v=0" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

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