What is your S54 Idle Speed?

Dubbedown

Active member
Curious to know what the cold and warm idle speeds are for M owners?

If responding, can you also note mileage, and whether that is factory or adjusted (e.g. tuned)?
 
I haven't looked when it's cold as it drops pretty quickly, but typically around 900rpm when warm on my stock 93K miler.
 
Bmwz4ruby said:
Dubbedown said:
Bmwz4ruby said:
Cold about 1050-1100 rpm
Warm about 900-950 rpm

Z4MR with 52,000 miles

Is that stock or adjusted after tuning?


Stock but with Eventuri intake.

What is your idle?

Warm was upped to 970 to account for a lightweight flywheel. Cold don’t recall exact but I think its around 1100

maupineda said:
Idle according to TIS is 870

Very good to know, thanks.
 
Looks around 900 warm - haven’t plugged in to the odb for a more detailed check.
 
Mine was always about 900 rpm warm. From 12k, when I bought it until 77k, when it died. :( Always stock tune. No Modifications ever.
 
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