FC 45

[Matt S Bower]

If the shift was stable the shouldn't the blm learn to work it out so
long as the change wasn't to great, but from what I am seeing with this
is that the problem is fairly intermittent.  The more set speed cruising
you do the more likely it is to happen but not exactly consistently.  

Matt

Mike Pitts wrote:
> 
> I wonder....
> 
> If the shift is stable, and the new higher flow rate doesn't change any
> more...
> perhaps a recalibration of the EPROM to account for the extra flow would
> cure the over rich problem.
> 
> If nothing else, it would be a much easier fix, and opens up the possibility
> of adding additional fuel if the VE was improved through better cam, heads,
> headers or whatever.
> 
> -Mike
> 
> -----Original Message-----
> From: John T. Martin <gmman at eskimo.com>
> >93 S/T-10 vin W cpi has a somewhat cronic problem with code 45's system
> >rich. usually  with slight rough Idle. It has been my experience this is a
> >CPI problem . When this system was introduced we had  lots of unusual rich
> >conditions. CPI's use one electrical injector followed by six poppet
> >nozzles. The poppets are use for distribution, the single injector for
> >metering. Under a lab condition this was investigated and found a portion
> of
> >the injector housing was shifting (we are talking .001"  's here) creating
> a
> >larger metering orifice.