In the last week I've been having an issue with my revs under load.
It only seems to happen in 3rd 4th and 5th gear, however to start with I only noticed it in 4th and 5th. Effectively when I put my foot down the revs rise and then fall back for a second before continuing upwards.
I originally thought clutch but after thinking about it if it was that the revs would rise and then bite dropping back down, what I'm getting is a steady rise and then drop before climbing again. my thoughts at this point are either throttle body, or a split pipe. I'm getting no codes to back anything up. I'm going to have a visual check of the pipes and will try cleaning the TB with some carb cleaner.
Thought I'd ask the question in case anyone has suffered the same issue or had any other ideas, I've had a search on the forum but can only really find threads around revs dropping and rising in idle which I'm not getting.
This video shows it happening, about 20 seconds is where I put my foot down and it drops if you want to skip to it. (excuse the quality!)