Hi, So I have finally received my XFI Street ECU after a large fight with FedEX who wanted to charge me twice for importing this item into Australia and now I've finally got some time to fit it. Thought I would start a new thread about the XFI rather than adding it as a post to my previous thread as this is a whole new topic. I read through all the help (html) files included with CCom WP software a few times and read through fastmanefi website and provided (.doc) files for xfi 2.0 (thanks for providing those), but my initial startup shows some unexpected output so I'm not sure what is the most optimum place to start adjusting. After going through every option in CCom and setting what I think is needed (except fuel maps), I started the car and as expected it sounded horrible and would not idle at all. Yes I know the car is cold but that is a good place to start because it will always be cold on start, so no point trying to drive it yet (imho) until I can get that sorted. I set closed loop and chose Speed Density Mode. See attached what I see from the logging and where the ECU thinks the load is on the engine. I've stopped the graph at engine 800 RPM and TPS is 1.2% but the ECU thinks it is under 82% load? Target AF is 13.31 but actual AF is 8.88 Clearly my low idle vacuum is causing the ECU problems. I think I'll be needing to set the closed loop / learning to start at say 1,500rpm and then use manual settings below that so it doesn't have such a problem. So at this stage I think I should ignore the learning ability and just see if I can get this to idle (when cold). Should I set the VE vs RPM & Load table from say 700 - 1000 rpm through the 10% - 100% range to say 40? I look at the example 3D maps on fastmanefi website and I see values in that same range from 30 - 50. Or should I be looking at something else first. I read through the documentation about Alpha-N mode and based on what that said I think I may have to run that instead, however what confused me a little is when it says that to run in Alpha-N mode, I have to reposition my Map sensor upstream of the throttle blades so it can read ambient air pressure? Is that necessary if I intent to use the self learning at RPM above 1,500 (or whatever rpm anyone can suggest would be more optimal) and just use manual tuning below that. I set the mode to Alpha-N and then started the car and logged and now on the tables the green oval stays constantly along the 100% load row (load in the log lists as a constant 99%) and target and actual AF look the same as the attached. Also just on the logging I included Fuel lbs/hour on the dash as you can see it appears as an item on the log except it is always 0, but watching it live (during logging) it was showing 32 lbs/hr. I wonder why it did not log those values. Two other questions. Fuel Calculation Parameters. I'm using the standard injectors that were supplied with EZ-EFI 1.0 (back in 2012/2013). The manual for the EZ-EFI says they are 88lbs/hr at 60psi. I'm running dual (2 x throttle bodies) and I have my fuel pressure set to 43psi. so based on what the help said I have set my injector flowrate lbs/hr to 63 using this calculation 88 * (43/60). That ok? Setting Idle RPM. That was just a case of entering the target RPM on the hand controller. Now I see no option for that. Is the only way to set the idle now is via the Idle Speed vs Coolant Temperature and maybe also the AE Fuel vs Coolant Temperature chart? Thanks for any advice.