Lil Fuel boost

[Dave Zug]

well I guess its worth a few WOT tests - next spring.... sans the cheater
gas.  ;-)  thx.

----- Original Message -----
From: Bruce Plecan <nacelp at bright.net>
To: <gmecm at efi332.eng.ohio-state.edu>
Sent: Monday, November 22, 1999 8:25 PM
Subject: Re: Lil Fuel boost


>
> ----- Original Message -----
> Subject: Re: Lil Fuel boost
>
>
> | Dave Zug wrote:
> | > I understand the CTS and IAT affect fueling slightly.. If one were to,
> | > saaay, install a sneaky pete NOS bottle directly skwirting into the
air
> | > intake, in general, what percentage of fueling increase can be had by
> | > quickly falsifying a 5 degree CTS or IAC on a 70 degree day?
>
> None that you can measure on a AUJP chip in a 730 ecm.  Now going to -40dF
> is another matter.
>
> is it even
> | > worth it? and which would be better to fool, IAC or CTS? (less
negative
> | > effects on other operations).
>
> Fool the IAC idle air controller?????
> MAT or CTS?, both make large changes.
> You could use the very bottom range of the IAT for weater that you
normally
> won't
> se say -35dF, and use a switch to go to that particular MAT correction.
>
> | > Part 2:  In my work, we commonly add programming to ignore rapid
sensor
> | > transitions (not only ultra high and ultra low readings, but rapid
> | > transitions as well), and mark them as BAD.  has anyone seen this type
> of
> | > error checking that might hamper my little trick?
> | >
> | > Part 3:  inject NOS before or after the MAF?? I say before... but
> systems
> | > commonly use after.
>
> AFTER, NOS is cold will kill the electronics with instant freezing.
> If nothing else, will coat sensor ever so slightly.
>
> | My experience is that CTS has a much greater effect on fuel/spark
> | parameters, and pulling the connector off or suddenly changing the
> | value usually gets results pretty quickly.
>
> Instantly in a 730 cal.
> Grumpy
>
>   Simple flip of a switch to
> | send fixed value to ecm may be easier.  I'm talking in general, not
> | specifically for your ecm.
> | Shannen
> |
> | > The application is '165 5.7L TPI, ARAP bin.
> |
>
>