[Diy_efi] Timing Advance Curve?

[Dave Dahlgren]

I am in the USA in Connecticut..
Unfortunately the map is the property of the guy I tuned the engine for.. His
money spent not mine to give away. I can forward your e-mail to him though and
let him reply directly. Sorry if it was for my car you could have it. The engine
has TWM throttle bodies and the SCCA required restrictors so I am not sure how
much there would be to learn anyway. I will comment that this was one of the
most efficient engines I have worked on in along while. The BSFC was routinely
in 0.38 to 0.36 range. I thought the dyno was broken to be honest but we checked
the fuel flow meters and they are correct and the correction factors were all
right as well. The engine seems to like A/F ratios around 13.8 at WOT and does
not need a lot of timing as well around 32 to 34 at WOT with race fuel , C-12
and 13.5/1 CR. You can add more timing but it makes no more power and it did not
improve response either. The same with the fuel you can fatten it up a bit and
the power goes down.
Dave

Rod Hiorns wrote:
> 
> Hi Dave,
> I hope you won't mind me asking. A buddy & I are just starting tuning on
> our miatas and wonder if you have suitable maps I can compare to see how
> we're doing. My buddy has a 1.6 at up to 12 psi using a MoTeC, and I
> have a lowly stock 1.8, with a MiataLink, shortly to be turbo'd to 10 psi.
> I know all engines are unique, but any info would be really helpful.
> We're in London, UK. Are you anywhere near?
> Cheers,
> Rod


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi