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pushermanR
Guest
Just fitted a fmic and some other bits..on the way to the mot test the power was down and the boost level was staying around .7 when its usually just under 1(using a turbosmart valve) on the aftermarket guage..plus thought it might fail on running rich but the test guy says its running lean,,What could be the cause..air leak..ignition.(all the ignition is new apart from the coil)all the cylinders are sweet did a compression test and got just under 150 on all pistons..Any ideas please its doing ones swede in