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History of MembersPage/JorgenKarlsson/PorscheTurbo
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2006-09-08 17:45:55 . . . . MembersPage/JorgenKarlsson [Porsche 911 runs well again.]
2006-08-14 09:55:07 . . . . MembersPage/PhatBob [Put Hazzard in bold]
2006-08-14 09:52:57 . . . . MembersPage/PhatBob [Check megatune version - old one may still be lurking]
2006-08-13 23:09:46 . . . . MembersPage/JorgenKarlsson [Sent fixed config.txt file and keeping fingers crossed.]
2006-08-13 10:03:19 . . . . MembersPage/JorgenKarlsson [Asked owner to download config with new tools.]
2006-08-12 19:32:36 . . . . 88-109-129-49.dynamic.dsl.as9105.com [megaloader might be old]
2006-08-12 13:43:12 . . . . MembersPage/JorgenKarlsson [Signs of communication corruption in the config.txt]
2006-08-12 08:59:25 . . . . PeepPaadam [Maybe use 1GT101 Hall sensor?]
2006-08-11 17:35:28 . . . . MembersPage/JorgenKarlsson [Q about reliability of wheelerror counter.]
2006-08-11 06:19:47 . . . . 3e44b947.adsl.enternet.hu [bad missing tooth]
2006-08-11 01:04:49 . . . . MembersPage/JorgenKarlsson [Added scope graphs of the trigger signal.]
2006-08-08 21:53:14 . . . . MembersPage/JorgenKarlsson [Porsche 3.3T missfire problem.]

Changes by last author:

Added:
Problem solved

After finding that some cars get similar problems with powerflyback and Delphi 1000cc injectors (this car has Delphi 750cc) series resistors was fitted to the injectors. The car now run the injectors in saturated mode with series resistors and the ECU also has the flyback set up for highZ injectors.

The missfire disappeared immediately after this, I suspect that the strong pulsed currents caused a problem with the ground reference for the ignition control chip (I259). I hope to get find this problem on a car again to be able to diagnose it properly.

Jörgen

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