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Title: Stupid question: can somebody explain SUMODE? Post by: nyet on October 10, 2011, 11:25:42 AM No really, I can't figure it out.
Title: Re: Stupid question: can somebody explain SUMODE? Post by: Snow Trooper on October 10, 2011, 11:36:14 AM I think I am misunderstanding your question. But if if not, its just a reference to conditions.
Like if items A, B and C all are at a certain value, call it 1 (yes/active/passed/withing range/whatever) then its sumode 3 or maybe better yet 0. I assume the maps that we see are the only ones needed for good conditions. Like 0 is all = ok? sorta shooting in the dark... Title: Re: Stupid question: can somebody explain SUMODE? Post by: Pilot on October 11, 2011, 01:43:08 AM I think SUMODE defines the values corresponding to possible configurations of flaps in the intake. These flaps modify the intake's effective length and resonance. In theory, when you have a boxster or V engine, you can take advantage of one side's pressure wave to improve filling of the opposite side. At least, this is what Porsche (for example) claims.
So, if you have two flaps in the intake, the possible configurations are: Code: SUMODE Flap1 Flap2 Note that I could be entirely wrong on this. On the other hand, I have changed my KFSU* maps to open the flaps at different RPM's - using values defined in SUMODE* maps, so it checks out. Title: Re: Stupid question: can somebody explain SUMODE? Post by: nyet on October 11, 2011, 09:27:41 AM Thanks. "Saugrohrumschaltung" is roughly "intake configuration/setting" so I guess that makes sense.
So, for the 2.7t, does it have any meaning? The only flap I know of is on the RS4 intake box. Title: Re: Stupid question: can somebody explain SUMODE? Post by: Pilot on October 12, 2011, 01:48:50 AM You are welcome! I don't know about the 2.7t though. If there are no flaps then SUMODE probably does not apply. Unless, they use it to control a solenoid for something else?
I don't have the file handy but I remember that in my ME7.8, the possible SUMODE values are defined in maps named with the prefix SUMODE. If you find these maps and they contain only zeroes then it is almost certain that SUMODE does not apply for the 2.7t. |