[tunerpro] Re: 85-86 Fiero 2.5L LR8 (4 cyl) Help
- From: Joseph Davis <pgmfielf@xxxxxxxxx>
- To: tunerpro@xxxxxxxxxxxxx
- Date: Wed, 28 Mar 2012 09:31:25 -0400
I'm sitting ten feet from my dyno, and I don't get headaches from rich
mixtures - just leaded fuels.
Hard to call Innovate units quality since they die so often. I've three
LC-1 and an LM-2 I keep meaning to get around to fixing. The new AFX are
awesome, though, they ship with an NTK sensor now.
Please keep in mind that air fuel ratios are not measured at any time by a
wideband, they are inferred. I go by smell and idle quality over what a
wideband reads. It all comes down to what the motor wants, and when I am
in doubt I cycle between wideband, read plugs, read the carbon coat in top
of the piston. Doing a credible job with other people's engines is a
systematic process where you doubt every thing you see and every premise
you make a change on until it is verified by multiple inputs.
Datastream/sensors, power output on the rollers or timeslips at the track,
smell, the sound of the motor as it makes a pull.
On Mar 28, 2012 9:19 AM, "Matthew Barnard" <mattbarn@xxxxxxxxx> wrote:
> Wow, that's scary to hear. For the record, smell accounts for nothing
> except a headache if someone runs the dyno with the doors closed.
>
> Politicians are the biggest liars ever. If you don't trust your
> wideband, I suggest a quality unit from Innovate or NGK.
>
> Matt
>
> On Wed, Mar 28, 2012 at 9:11 AM, Joseph Davis <pgmfielf@xxxxxxxxx> wrote:
> > Smell accounts for a lot, as does idle quality. Widebands are the
> biggest
> > liars ever, particularly Bosch based ones.
> >
> > On Mar 28, 2012 9:09 AM, "Jason H" <scorp1us@xxxxxxxxx> wrote:
> >>
> >> I don't think this is the list for it. Go to thirdgen.org
> >> Smell doesn't count for anything.
> >>
> >> Tunerpro will show you your narrowband O2, which should constantly flip
> >> from high to low.
> >> If that is not goof enough, get a wideband O2 and hook it to the analog
> >> port as per the instructions.
> >>
> >>
> >>
> >> ----- Original Message -----
> >> From: Frank Zeller <FZeller@xxxxxxxxxxxxxx>
> >> To: "tunerpro@xxxxxxxxxxxxx" <tunerpro@xxxxxxxxxxxxx>
> >> Cc:
> >> Sent: Wednesday, March 28, 2012 8:55 AM
> >> Subject: [tunerpro] 85-86 Fiero 2.5L LR8 (4 cyl) Help
> >>
> >> Need help
> >>
> >> Working on 85-86 Fiero 2.5L LR8 (4 cyl)
> >> With
> >> Bin Definition 1C.xdf
> >> Datastream Definition 4E.ads
> >>
> >> Cant get the idle to lean out. BLM is 128, but its smell rich.
> Thinking
> >> GM set the idle rich to keep catalytic converter hot? Catalytic
> converter
> >> has been removed. Is there a location in the bin were I can set oxygen
> >> mean level at idle?
> >>
> >> Thanks,
> >>
> >> Frank Zeller
> >>
> >>
> >>
> >>
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