|excuse my lack of knowledge on the subject, your setup is running everything |
stock right? so this would include the fuel line pressure? your measuring
the opening and closing of the injector, is it possible to increase the line
pressure, so that even with the injectors running out of duty cycle, there
can still be more fuel added, as there will be more fuel added per cycle by
the pressure being higher?
hope that made sence.
----- Original Message -----
From: "Stuart" <email@example.com>
To: "Supra Club of NZ Mailing List" <firstname.lastname@example.org>
Sent: Wednesday, October 13, 2004 9:32 AM
Subject: Re:[sconz] 1jz gte and injectors
> >What is interesting, that on dyno runs with my JZA70 with boost at 15
> >psi, my
>>AFR was 10.
>>You would expect that the injector duty is therefore completely maxed out,
>>it was not leaning out, only by adjusting the FCD could I bring the afr to
>>Stuart how have you verified your meter accurate?
> With an oscilloscope attached directly on the injectors.
> It is only reaching 95% at redline and max boost, you will have more
> at lower rpm. Remember that higher boost is a rapidly loosing battle which
> does not increase the available air that much (certainly on the stock
> Also, how are those AFRs bring calculated - oxy sensor? unless they are
> from a
> 3-gas analyser they are 'approximate' at best.
> The 1jz does run damn rich so there is some headroom, and injector outputs
> increase significantly as they hit 100'% (as there is no closing/opening
> delay and interruption to their flow), but my point is that they are
> close to their limit stock.
> Supra Club of New Zealand - http://www.supras.org.nz/
> Website sponsored by Alltech Diesel & Turbocharger http://www.turbo.co.nz