PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

No one knows - - help.

Old Aug 16, 2007 | 04:27 PM
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Default No one knows - - help.

Have an 05, C6 and it has had headers, Vararam and a tune since 1100 miles.

Developed a high speed burble, not a miss but almost like one and you could feel it: put in new plugs, proper spark plug wires, checked injectors- same thing.

Our dealer is really poor: gave me a VDR and we did see the MAF drop from over 10,000 to about 4800 in a matter of 200 rpm.

Put on a new MAF: same thing. I had a new T-body (OEM) and tried that, same thing. Tried tightening the intake bolts and they may have been one or two flats loose: same thing.

Dealer says you have headers and ram air and we can't help you: told them it has been fine for 19,000 miles so it wasn't that - - any ideas out there as to what is causing this burble at about 6200? (REv limiter is set to 6800 - - it isn't that).

If you think you know all ideas are welcome - - Thanks

John
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Old Aug 16, 2007 | 06:39 PM
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try changing air and fuel filters
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Old Aug 16, 2007 | 06:41 PM
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Both filters are changed . . . neither, to my understanding would cause the MAF to drop as radically as it did.

Dealer is useless!

Thanks for the comment.
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Old Aug 16, 2007 | 08:14 PM
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Can you try putting the stock intake back on and see if the problem improves/goes away?
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