History of MembersPage/MarcSwanson/CustomerProjects/AudiSFourK
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2010-03-21 04:05:30 . . . . c-24-61-109-220.hsd1.nh.comcast.net [added images]
2010-03-21 03:46:13 . . . . c-24-61-109-220.hsd1.nh.comcast.net [initial submission]


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Added:
This customer project is an Audi 4000q with a BHF code Audi S4 v8 engine.

100_3979.JPG

The car will be running a VEMS engine management system which raises some questions:

The stock engine uses a constantly variable VVT (Variable Valve Timing) system that is controlled via a PWM output from the factory ECU. we have logged how this system is controlled by the factory ECU using vagcom, the output looks like this:

bhf_vvt_pwm_graph.JPG

Question: I have seen reference to full PWM based VVT control in earlier firmwares but it does not seem to be supported in 1.1.6x. Are there any plans to re-introduce this feature?