Base Freq. for water injection

[Tom Boday]

Simon Quested wrote:
> 
> Hi Clare and all
> 
> Clare wrote:
> > What's wrong with using engine rpm to trigger, and just vary the on
> > time?
> 
> Like I said it's simple.
> I'm planing on using it with a knock sensor. The knock sensor unit I want to use has 3
> leds showing the amount of knock, I'll set it up so that the water injector turns on when
> the second led comes on hopefully stopping detonation.
> 
> Has anyone ever done/thought of using a knock sensor to control boost ?
> ie keep the boost rising untill it knocks then bring it back a bit.....this would take into
> account air temp, altitude etc and give you max boost for the conditions.......
> 
> Cheers
> 
> Simon

Simon!
As far I know SAAB uses a systemlike this in their cars since about '84.
Maybe you should try start with that existing thing.
Be bad:
Tamas