[DeanRider]

According to published reports the second generation Keihin Engine Management System with its increased memory capacity enables the time for cold starting to be decreased to 0.4 seconds. The first generation system fitted to the '05/'06 S3 was reportedly rated at 1.5 seconds.

Is this however desirable? I know friends with other super bikes often turn the motor over for a few seconds with the engine cut-out on, so as to raise the overall engine oil pressure. I have often thought therefore that the programmed delay of +1.5 seconds was advantageous.

What do the experts out there say?

 

[Diego]

I can't see that it makes any difference from an oil standpoint. How much pressure do you think the pump builds up in one extra second at cranking speed? How much actual oil do you think that circulates through the more remote channels of the engine in that time? It's not very much!

Any engine at startup is going to be depending for lubrication on the film of oil that was left from the last time it was run...not what it receives during cranking.