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Reanimotion Reanimotion is offline
umop apisdn
 
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 441
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.
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

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Old 03-13-2016, 08:40 AM
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