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Anyone know what pinout is on the e78 ecm on a 2015 silverado 2500 6.0 for flex fuel.  I wanna add the flex fuel sensor and disable the ecm virtual one.  Truck is a flex fuel truck.  or does anyone know of a kit with the sensor and pigtail?

  • 2 weeks later...
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Looking for insight.  2015 6.0 just did a whipple.  Only does it when giving more than 50% throttle.   Having issues and trying to figure it out.  Heading back to tuner for 3rd time next week.  Sent him this from another group  Dirk Diggla doesn't look to be a convertor issue, especially if Temps are still normal. Every convertor failure I've seen,, the 1st warning signs are 6th gear shudder and higher than normal temls from slippage,    id be intersted in seeing what was done to the VTT tables and reported torque tables in your tune. These gen 5  E78 pcms are 100% torque based and if those 2 tables aren't done correctly cause lots of issues. I'm betting your tune is way off  His reply Hey Andrew, I’m m not sure what that noise could mean, I read what you sent that you found online, but the VVT tables are stock and untouched, the TW tables were raised in the correct areas, I was able see the video I’m not sure what that noise is..   Looking for insight.  Know its hard without a log file to view.  https://drive.google.com/file/d/1LU5kRrMpe3SMn9BuDwLNnwUyqM3NDdys/view?usp=drivesdk

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