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C4s flat spot

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHC4s flat spot

1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.

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1 matching discussions · 3 captured posts examined · 0 partial discussions

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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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Generation: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Has anyone had a slight flat spot in the lower revs in there 2002 C4s. My one felt to just have a bit of a flat spot at about 3000rpm. I just filled up with fuel the same day as I notice it so it may be bad fuel. The other question is do you know of any computer chips for the C4S and if so do they work. <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

POST 2Original post

My experience is that chips work better with Turbo cars.

POST 3Original post

Welcome to the board, Hebo. Yes, there is a change as you go beyond 3000 rpm. This has been discussed previously. Noted only on slow acceleration, there is a power surge starting at about 3200 rpm.

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