Hi, I have a 1.1 SPI Seicento, and it has a few issues.
First the RPM are high, above 1.5k to 2k
Sometimes the RPM bouce, like it drops to 1.5k and revs alone to 2k, then drops again
Sometimes when I press the clutch and brake the car drops the RPM so low that almost shuts down (sometimes it does).


Then I have a question: can you put the momo steering wheel, the 3 spoke one from the uno turbo ie in the seicento without using a hub, and does the horn and airbag work with the momo wheel?

No one has a clue on how to fix this issues?

check the engine for vacuum leak. probably a leaky hose to map or similair