As I mentioned a few posts back, soon after wrapping up the installation of all the new fueling hardware, I realized I had ordered my G5 board about 6 months prior to when BMS started shipping them with their 24K22 chip that's needed for PI integration. It only took a few days for the anti-lag chip (and Dragy module) to make its way from California to North Carolina. Installation seemed like a breeze. Just pull out the old chip and insert this new one in the same orientation.
Moments after the picture above was taken, I managed to break off one of the pins on the very end of the new chip while trying to get it seated. Doh! I felt like an idiot, but swallowed my pride, managed to reinstall the old chip back into the JB4, put everything in the engine bay back together, and made a rush order for another updated 24K22 chip. Thanks to Payam, it got out the same day and would be in my hands 48 hours later so I could try again.
In the meantime, I downloaded Fuel-It's iPhone app (previously I'd only been monitoring E85 content through the JB4 Mobile app) and took the car to add some more ethanol. Because prior to all the new parts, my HPFP was struggling to keep up, I had been running only a few gallons of E85 per tank to help with timing while running mostly pump gas -- E17 in this case.
Fuel-It's app connects via Bluetooth to the analyzer to show ethanol content and fuel temperature, and also includes this very helpful E85 calculator for mixing.
After using the calculations above to achieve E50, and allowing the new mixture to make its way past the ethanol sensor and into the engine, we were looking at an actual E49 mixture. For what I was targeting, that's pretty accurate and also confirms I have a reliable source of E85.
The second time around, I was able to get the PI integrated chip installed successfully. From there I flashed the BMS ST TS E85 PI THR BEF, switched to map 2 (17psi), set fuel bias to 50 across the board, set FF low, set my DWP to 80, set my open loop to 0, set meth scaling to 99, and made sure menu 8 was on option 0 through the steering wheel controls. After all this, the port injection and dual fuel pump setup should be ready and active.
Unfortunately the rain has been a nuisance for the last week or so, so I wasn't able to get any multi-gear logs, but I was able to get on the throttle enough in third gear to take some short logs that confirmed the PI was flowing properly -- this could be seen by looking at the fuel enrichment column on the JB4 logs. In addition, the trims were looking excellent and high and low pressures looked steady. Even at map 2's 17psi, the port injection E85 tune was a night and day difference compared to the pump gas tune, and spooled noticeably faster.
It also feels nice to be running so many modifications with not a single warning light on the dash.
Finally, I
should be ready to rock n' roll with this single turbo now that it has all the fuel it needs. I can't wait to see what E60 and 23psi will feel like. I'll be posting up some 3rd-4th gear pulls on map 2 sometime this week, weather pending, so I can confirm everything looks good when WOT for an extended period.