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power problems?

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Old 10-03-06, 06:50 PM
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power problems?

OK, I have a 90 n/a gtu with k/n filter
at about 7k i lose power horribly and as soon as i shift it backfires real bad.
Can anyone explain this? Maybe a foul plug? Or the cat converter stopped up?
Thanks,
Zach
Old 10-03-06, 08:02 PM
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spark plugs or spark plug cables would be the first thing I would look at... followed by the air pump and vdi valve
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