-------------- Original message --------------

> One nagging problem that I have is the engine running rich at low power
> levels. I've turned the fuel pressure regulator down to 30 lbs to get it
> reasonably lean, but I still don't have enough adjustment. The higher power
> levels have a pretty good mixture on the default tuning.
>
> Right now I'm running the stock 550cc injectors, but I'm considering
> changing the primary injectors to 440cc, to help the low end mixture, and
> leave the secondaries at 550cc, so that I still get sufficient fuel flow
> with the turbo at higher power settings.
>
> My thinking is that the 440cc injectors would allow me turn the fuel
> pressure back up to 38 lbs. and hopefully still be able to tune the lower
> end where only the primary injectors are supplying fuel.
>
> Does anyone have experience doing this, hopefully with a turbo, or just have
> an opinion ?
>
> Steve Brooks
>
>
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