i think the computer need to be reprogram
Typically with the Mazda RX8 Rotary engine vibration at revs as high as 6000 is down to engine damage suffered when oil was low. Your engine requires rebuild or renewal. Vibration at idle only is typically engine mounts, a know fault many dealers are aware of.
Gear changes are determined after how fast the engine is turning. For each gear there are set limits for which engine revs that are allowed. if the revs go high, the transmission changes up a gear, if the gears go low it drops down a gear.
generally , two strokes are smaller capacity , shorter stroke, higher revs. for given engine capacity , long stroke /small bore = high torque / low revs short stroke/big bore = low torque / high revs
Battery fails to charge, alt light comes on, sometimes only at low revs. Check with meter shows low or no charging voltage (close to or less than battery voltage) voltage does not increase to charging volts with engine revs increase
Excessive vibrating at low RPM can be caused by worn-out engine mounts. These pieces mount the engine to the frame of the vehicle, and when they wear out, the engine can literally lift and shift out of place when the car is running
Excessive internal engine wear? Install a manual gauge the check oil pressure
generally if you turbo isn't working then you should feel the engine give a different note and respond differently at low revs
Low cvt oil level or selector control cable
Have you checked engine mountings!
A 4-stroke will run quieter and cleaner. It will rev lower. For a given engine power it'll be heavier and bigger. For a given engine power it'll use less fuel. The engine will need more parts and be more complicated 4-strokes generally have better torque at low revs. A 2-stroke will run noisier and pollute more, It will rev higher, for a given engine power it'll be smaller and lighter. For a given engine power it'll use more fuel. The engine will consist of fewer parts, and be a simpler design. 2-strokes generally have less torque at low revs but do better at high revs.
low speed in carb stopped up....carb needs cleaningAnother AnswerMost common cause of engine revving up and down is a dirty or clogged air filter.