Can anyone please help before i waste a sackload of cash!.Audi a4 1.8 98 model...It has a flatspot/loss of power and sometimes feels like its running on 3 cyls.ive changed the air meter and coilthng on top but aint made any diff.pulling my hair out here...plz help!

go clear your cel. there might be a stored code that isn't lighting up the light that could be giving you trouble

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01.5 2.8qm: Custom CAI, 18" Hp Lightning on 245/40/18 Kuhmo Ecsta MX, CC mod, tinted tails, 2x 12" Jensen sub with a 300 watt Bazooka Amp, Asian driver....

thanks mate! had 5 codes cleared,runs gr8 now.