Lost red-line? Like Gelbster said, or follow below:
After scrubbing the TB (throttle body and conn tubes) of its thick crap, the car literally felt like a rocket passed 5k here. I had the exact symptoms as you are describing. Found 1~2mm thick dusts, poo, paper, anything, mixed in old vapor oils. Was all over it's internals with equally as much in the intake tubing. Not exactly good for air flow lolll
For that little roaster to half-perform, the entire air intake assembly needs to be impeccably clean.
DYI: Needs 2hrs, ordinary shop tools (screwdrivers, torx), some quality Carb Cleaner, a toothbrush or something that scrub well in small areas, and a mini screwdriver to scrub inside small cavities. If my memory is good. On the scale of things, I'd say "easy" for a home DIY.
If it is that, then you just won't believe what you are about to experience, goes up to your red-line nearly twice quicker also
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