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Reanimotion Reanimotion is offline
umop apisdn
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 501
Originally Posted by flightlead404 View Post
However I've never seen this behavior with the mechanical WUR in place. Never observed any pulsing or oscillation in RPM. Since the mechanical WUR isn't reactive to mixture changes, I don't see how it would get into a needle chase.

Have you seen this behavior on non-turbo applications?
looking at the log we've been discussing, the pressure fluctuations may be a red herring. The chasing should have a damping effect if the pressure fluctuations are indeed just caused by the air plate fluctuating.

base question - is there a detrimental effect on mixture or engine behavior, and if so where?

the first on overrun seems benign, the second during idle has VE2 and the frequency valve impacting the AFR and idle

IF the idle area of VE2 can be flattened out, does idle and AFR improve?

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 02-08-2017, 03:58 PM
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