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Ok, the problem is related to flat spots between 2-3000rpm after a long drive(intermitent, may or may not happen) or hard running(will happen).
They're noticable as flat spots in 1st/2nd but in 3rd- it seems as though it hits the flat spots and bogs down and wont come out of it. There is no pinging then engine just seems laggy. The plugs have been replaced recently... a few times. New fuel filter, new airfilter, always 98ron. Engine isn't running rich or lean (as far as the plugs show).
Edit:
It doesn't seem engine bay temp related as it ran fine, temps were up at 40c then down to 20ish while driving all day and it ran fine for a while, then just started running crap again with the flat spots etc.
Nick
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Any ideas guys? I'm taking it to tecknik tunning to be chucked on a dyno soon. Just want to try anything before I fork out $X00 to have it tested.
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yeah i suggest taking it there too. that's where i've been getting my work.
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dyno wont be same as road anyways.