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Message: <blockquote data-quote="ess530i" data-source="post: 289914" data-attributes="member: 13496"><p>replaced my volker plugs today with nology silver & my stock ignition coils with okada project plasma direct. result is noticeably better & smoother acceleration and boost increased from 4.5 to 5.5bar (8psi) with better fuel economy but the jerkiness during full throttle is still there. my final suspect is the tuning done by ess which may not be suitable for our weather. there may be too much fuel as indicated by the additional carbon deposit on my exhaust tip. i did replace my fuel pump and filters during installation of the supercharger. my kit included larger injectors which i am contemplating to change back to the originals to reduce fuel. any comment?</p></blockquote><p></p>