14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCan you feel the Vario-cam plus kick in?
Leading reported evidence
Replace power curve of the engine
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
You may be feeling the intake tuning flap activating which suddenly changes the power curve of the engine.
Leading evidence: 'Replace power curve of the engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace power curve of the engine' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I've of course been paying very close attention to any unusual sound/rumble/vibration that eminates from behind...anything that might hint at an IMS issue. At between 3100 and 3200 rpm (most noticeable in 3rd & 4th) I feel a slight blip from the engine that feels like an increase in torque. I know this is where the torque curve starts to flatten, so I wonder if it is just the vario-cam plus doing it's thing as oppossed to a crritical vibration point pointing to a future problem. Anyone else ever feel the same "blip" at that or any other RPM???
Yes. It's a critical vibration point pointing to a future problem. Definitely.
Sorry. Could not resist. Particularly since you opened the post with "of course paying close attention to anything that might hint at IMS".
Yes, that's the variocam. Normal. It is most noticeable when you slowly accelerate, non-existent if you go WOT. It means you are driving like a wimp!
Just step on that gas, drive it like you stole it, enjoy the car, and stop listening for problems and instead just listen to that glorious flat-6 howl!
I'll have to pay attention and see if I feel it... but usually I'm above 3k RPM in whatever gear I'm in, so I'm already past the transition. If I'm under 3k RPM, I'm hard on the gas to get the revs up!
You may be feeling the intake tuning flap activating which suddenly changes the power curve of the engine. If your throttle is 30% or more open, the flap will slam shut at 3120 rpm causing, a sometimes jerky change in power.
There you go..that's what I was looking for..BMW has the same thingto change the tuned length of the intake runners...I wondered if Porsche had the same thing..that's exactly what it feels like and happens at the right time.. Take pity on me, I've had the car less than 3 weeks and am still feeling it out..
This is a source reference. Confirm exact model applicability in the original material.
