Engine Control Question

[Scott Feaver]

Ah...  I see.. That makes perfect sense as the torque peak is at 3600rpm.

Thanks!

> -----Original Message-----
> From: owner-gmecm at efi332.eng.ohio-state.edu
> [mailto:owner-gmecm at efi332.eng.ohio-state.edu]On Behalf Of Greg Hermann
> Sent: Tuesday, February 23, 1999 12:09 AM
> To: gmecm at efi332.eng.ohio-state.edu
> Subject: Re: Engine Control Question
>
>
> >I have been monitoring my engine with diacom and have found out
> a few things
> >about it..  One of which leaves me wondering why...
> >
> >Here are the details
> >91 Sunbird
> >3.1L V6 Engine
> >Automatic, 2.53 Axle
> >
> >When speeding up from a dead stop at WOT, the fuel injector
> pulse width is
> >around 12.2ms.  Once it goes above 3700 rpm or so, it starts to slowly
> >decline until it hits 5200 (right before shifting).  At 5200 rpm
> the pulse
> >width is 9.8ms.  Why would this be?  Is this so the engine
> doesn't melt :),
> >or for emissions reasons.  If this stayed at 12.2ms right to the
> shiftpoint,
> >would this generate more power?
>
> Nope, it is doing what it is supposed to do. The pulse width is a maximum
> at the TORQUE peak, then drops off.
>
> Greg
> >
> >Also, this thing has the 730 ECM.  How many frames per second on
> this baby?
> >(I asked this before, but now know exactly what to specify :)  Has anyone
> >found out anything about the MEMCALs for this ECM?  I have the
> eeprom loaded
> >in if anyone wants to take a look..
> >
> >Thanks,
> >Scott
>
>