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#2
16-01-2007, 19:09
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well i have similar problem, it starts to misfire under presure at 3000rpm
bu then all of a sudden it could go away for a second and then its back. it was running on denso plugs, so i changed them to the ngk gaped them and the problem got worse, ive checked for boost leaks as said, and i replaced all plug leads inc king lead. now this is the max power silvia so i dnt know whats done to the engine, the wireing is in a mess and ive replaced some of it. any ideas? 
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#3
18-01-2007, 18:14
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Problem solved
 ..popped in a new set of BCPR7ES's gapped 0.9mm last night, turned the boost back up and the missfire/flatspot had gone away completely. Plugs looked nice biscuit brown colour and had only done 3k miles or so  . Thanks for all help , probably saved me cost of a new fuel pump and intercooler 
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