Cookie Monster

Changing in a bad way! I had the car running and starting up real good. But now that I turned on GammaE in the Advanced fuel table selection it changes everything! I did it for start up reasons. the fuel table numbers are the same but the afr's are very inconsistant. I try to add more fuel and they just keep getting leaner! I can't even go back to my old saved tune. The ECU just does whatever it wants. Even if I turn off GammaE. HELP!

Zaphod

Reburn you firmware first.

Check your WB-AFR connection and settings in the MS.

Cookie Monster

My wideband settings are correct and connection is good. I turned the car off and turned it back on pulled up megatune again and it showed that my KPA settings on my fuel and timing tables are not what I burned them to previously. I'm talking way way off. I had 20 to 184 kpa burned but after I turned the car off and on again it was showing 10 to 111 kpa!!!! wtf?

I will try reburning the firmware right now.

Cookie Monster

That seems to have done the trick. Pretty damn weird though. Why does this happen in the first place?

Matt Cramer

Corrupted firmware. This can be particularly easy to do if you just open MegaTune without connecting to the ECU or opening an existing tune, and try to compose a map. It defaults to a table full of zeros, and sometimes puts zeros where they really shouldn't be (the GammaE being off is a very common sign that happened). Starting with a proper map helps avoid this.