Hello,

Hope someone can help me with an issue I am having.

Porsche 996GT3 2004 car running Bosch ME7.8 and they run 1 x resonance flap as standard. I have converted my intake manifold to a later model 2007 997GT3 and they run 2 x resonance flaps as standard. My ECU has both resonance flap maps and when emulated with OLS300 the map is active.

I have checked a later car wiring diagram and it uses pins C4 and C16 for the flaps. Mine uses pin C4 and then pin C16 is not used.
I have checked pin C16 and there is a frequency flashing on the power probe led. No matter what I alter on the flap2 map nothing happens.

I have found the following:

SUMODE - No energization of the suction pipework
SUMODE01 - Energization of flap1, No energization of flap2
SUMODE02 - No energization of flap1, Energization of flap2
SUMODE03 - Energization of flap1 and flap2

No matter what configuration I have tried I can not even turn off flap1 so what am I missing ?

Any help appreciated.

Mike