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Reanimotion Reanimotion is offline
umop apisdn
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 501
The testing fasteddie did on the lambda system noted earlier in this thread suggested there was an impressive range of control available without needing a non-stock WUR. Altering the control pressure via the WUR changes the current position of the air metering plate but does not alter the total amount of fuel available at 100% air plate swing. The Frequency valve on the other hand alters fuel flow itself, providing more or less than normal for any given position of the air plate. I believe the Frequency Valve circuit is the key to extra fuel at the top end for a standard fuel head.

For the IAT sensor, as we are not using it for the traditional speed-density fuelling required by EFI, it's placement is open to a number of options. At the metering plate is best if only measuring air volume/mass, but after the turbo and intercooler, just before the throttle body would be best if tuning to compensate for variations in compressor and intercooler efficiency.
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
Old 03-13-2016, 08:40 AM
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