[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: still going lean
I have an ecu file that may be of use for what you want to do. If you
want to give it a try with WinBin, let me know and I will send it to
you. If you are using the code from the 90-92 Camaro or 90-91 Vet
then it will work. Been using it for my conversion and has done
everything I have come to expect from it. If there are not enough
settings, I can put more of what you want in.
On 30 Aug 2000, at 16:53, DenniS Zacek wrote:
> Yes the engine is in a 85 corvette 383,miniram motor.
> A ZF with 4.10s
> I would have to say thats its more sensative in any
> little quirks or stumbles overa auto car. You feel
> every mis tune.
> I am using diacom.
> I usually keep the tps enable low say 3500up 25%.
> Car is running high 11's
> O2's look great for WOT(I know alot of guys dont like
> reading from these)
> Fuel pump is a high output bosch.
> So Are you saying may be hard or not able to tune 4000
> up above 70kpa.
> I do have diacom traces if anyone wants to take a
> look.
>
> So tweaking the pumpshot may help. I really never
> tweaked with this. I mainly run GMepr and didnt
> notice a pumpshot thru this edit prog.
>
> Thanks Dennis
> --- Bruce Plecan <nacelp@bright.net> wrote:
> >
> > > just to touch base. I converted from a 870 ecm to
> > the
> > > 7730 speed density in the spring time. All went
> > well.
> > > I was running my 24 lb injectors at first and 2
> > months
> > > ago I swapped in some 36lbr's. The 24's were over
> > 10ms
> > > above 6000. so close to static.
> >
> > So this is not a stock engine, right?
> >
> > > Well I everything was decent but I am really
> > trying to
> > > fine tune the drivabilty. Above 4000 its going
> > lean.
> >
> > How are you determining this?
> >
> > > I set the TPS enable to 90% for all RPM rngs.s(so
> > it
> > > wont bump in open loop) .I also have the blm
> > locked in
> > > at 128. I had my inj set to 34. wit hthis the car
> > ran
> > > decent ,WOT was right on but above 4000 leaning
> > out.
> >
> > This is the way it's going to be as long as you
> > approach WOT but staying in
> > Closed loop. Are you running Diacom?, or some why
> > to monitor the commanded
> > AFR.
> >
> > > Now for a while I had the TPS open loop enable set
> > to
> > > like 20 % at about 3000 up so it would run good
> > but
> > > now I am trying to get it right.
> >
> > Stout engines might take a low TPS enable to get
> > enough fuel for it to get
> > along. Remember the engine tells you what it wants,
> > and then even off the
> > edges to get the drivibility. As a forinstance, the
> > GN also has a fairly
> > low TPS enable. On the cross fire, I think most of
> > them were 35%. Tune to
> > what the table allows. On a mild engine, you might
> > be able to **tune** to
> > 90ish K/Pa.. Also want to monitor what the WOT
> > K/Pa, a restrictive
> > exhuast, and some seemingly good ones can choke off
> > the motor.
> >
> > I went from 34 to 31
> > > and turned FP up to 50 and still goes lean the
> > INT's
> > > go up above 150. My VE tables are maxed out up in
> > > this area as well.
> >
> > Might just be out of Fuel Pump.
> >
> > > I though going from 24 to 31 injector would be
> > alot
> > > but maybe not . Should I go down another 2 counts.
> > I
> > > saw in cats thers a pumpshot value , Is this sort
> > of
> > > like a accel pump?
> >
> > Exactamundo
> > Bruce
> >
> >
> > Any sugestions??
> > > TIA
> > > Dennis
> > >
> > > =====
> > > Dennis Zacek
> > > http://geocities.com/bowtie8
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Yahoo! Mail - Free email you can access from
> > anywhere!
> > > http://mail.yahoo.com/
> > >
> >
> --------------------------------------------------------------------------
> > --
> > > To unsubscribe from gmecm, send "unsubscribe
> > gmecm" (without the quotes)
> > > in the body of a message (not the subject) to
> > majordomo@lists.diy-efi.org
> > >
> >
> >
> ----------------------------------------------------------------------------
> > To unsubscribe from gmecm, send "unsubscribe gmecm"
> > (without the quotes)
> > in the body of a message (not the subject) to
> > majordomo@lists.diy-efi.org
> >
>
>
> =====
> Dennis Zacek
> http://geocities.com/bowtie8
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Mail - Free email you can access from anywhere!
> http://mail.yahoo.com/
> ----------------------------------------------------------------------------
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo@lists.diy-efi.org
>
>
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org