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Reanimotion Reanimotion is offline
umop apisdn
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 503
Data logs from cold Start and on the road drive

Confirmation that the mechanical WUR is time based for initial enrichment with ambient temp/engine temp deciding the start point and therefore duration of initial enrichment

at cold start with ambient of 25C, WUR based enrichment is essentially over after 120 seconds

Load/MAP based enrichment due to the vacuum being taken from (ported) above the throttle valve is confirmed WOT/Gross Accel enrichment at least in a NA environment. the lack of deceleration lean out is also obvious due to the design and port location

AFR is basically flat and control pressure variations seem to be more about the air plate / main plunger movement than any real input from the WUR.

same as before
- red = AFR target
- white = RPM
- yellow = AFR
lower section
- green = control pressure
- red = Manifold Pressure

initial start

on road
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at []
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

Last edited by Reanimotion; 08-24-2014 at 02:10 AM..
Old 08-24-2014, 02:07 AM
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