10v MC2 + E85 (Bioethanol) = true or false?

[hayes myers]

Do not use blend. I don't remember why, but have read more than i can
remember. hmm. someone will chip in otherwise, until confirmed or not, do
not run E85.

On Wed, Apr 8, 2009 at 5:48 PM, Dag Bøsterud <
dag.boesterud at consulgranada.net> wrote:

> Have any of you ever tried using a blend of regular gas and E85
> (Bioethanol) with the MC2-engine? (Dual-knock 10v turbocharged R5)
>
> My 1990 Audi 100 TQ Sport has this engine, 165 hp (121kW), and it's
> completely original.
> No modifications to raise boost pressure or things like that.
>
> I have tried to fill the car up with a blend of 50% gas and 50% E85, and
> the car gets
> completely undriveable. I've also tried a blend of 70% gas and 30% E85.
> It's clear that the injection system - Bosch KA-Jetronic - which is
> lambdaregulated,
> cannot compensate for the fuel needed when using E85.
>
> A friend of mine had the MC-engine, and he tried a blend of 50% gas and 50%
> E85, and
> it worked wonders. The car felt quicker, and there were no fuel supply
> problems.
>
> So, is the MC2 engine management so different from the MC, that E85 can't
> be used whatsoever?
>
> Dag
> 1990 100 TQ Sport Exclusiv
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