Maximum advance

[Tom Sharpe]

Axel Rietschin wrote:

> >
> > Axel Rietschin wrote:
> > > Turbo engines are mostly constrained by the knock limit,

>From your earlier post, you mentioned 98 RON. Here, on the street, we can only
get 87, 89 ( 87 w/ 10% ethanol) and 93 defined as (RON +M)/2 (Research+Motor)/2.
What is the relationship between RON and US gas?? ( and don't give me the math).
I need to know what to put in the MB that calls for 91 RON??).  Thanks  Tom

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