[urq] EFI + MAC-14 maxing ataround 5k RPM

Cody Forbes cody at 5000tq.com
Wed Oct 24 09:39:46 PDT 2007


QSHIPQ at aol.com wrote:
> Ben
> That wiring shows no MAP input to the MS unit.  Is that just  missing
> from
> that diagram?  How is the software accounting for load?   It would
> appear that the system below just uses TPS and RPM with 02 feedback
> loop.  With the MAP 'upgrade' you indicate having, does load  now
> include that input?  Can you
> change the load values of  MAP?  My thinking is that either the load
> signal is missing from the  programming, or it's scaled to vacuum
> only?  That would be consistent with  injectors at WFO with a no load
> rev to 5krpm.
>

The MAP sensor is inside the ECU just like stock on our cars, there is a 
vacuum line to the MegaSquirt. By MAP upgrade Ben means to say that inside 
his ECU is a sensor good for 3.5bar (incl. atmo) whereas stock for the MS is 
2.5bar.

-Cody Forbes
http://www.5000tq.com
'87 5ktq - Fast.
'87 5ktq QLCC'd plus some
'86 5ktqCD
'86 5k
'86 5k 



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