A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Strange "pop" @ 3k RPM, only when at WOT, only in the upper gears (4th +5th).

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Old 01-21-2004, 10:07 AM
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Default If I could find some high octane fuel in my area..

I would be running it even if I didnt have this problem.
Old 01-21-2004, 10:08 AM
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Try Sherwin-Williams ?
Old 01-21-2004, 12:50 PM
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It ran just the same, if not worse with the copper plugs.
Old 01-21-2004, 02:29 PM
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Default I've tried Denso and copper. I get the best results on the NGK platinums .. expensive like the Denso

but much smoother especially at boost onset.
BTDT with the misfire at boost onset both with chipped on the Densos and Stg III with copper and Denso.
Old 01-21-2004, 05:23 PM
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Platinums, really? I will have to give them a try. thanks.
Old 01-21-2004, 06:42 PM
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Default Yes . . NGK PFR7B

Like I said ... pricey but I run the smoothest and have the most 'snap' with them.
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Quick Reply: Strange "pop" @ 3k RPM, only when at WOT, only in the upper gears (4th +5th).



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