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Discussion Starter · #1 ·
Hi All

I have now fitted nice new NGK's to my 1987 9000 2.0t and my boost seems to be a bit irregular. I have turned the boost up using a blled valve, and it now entering the higher end of the red area on the in-dash boost gauge and drops back down to the start of the red. I am not getting any pinking or fuel cut.

Any ideas

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