After receiving my Hahn Stage 2 Turbo kit at the beginning of November 2016, I waited for the various recalls to get completed. Once the recalls had been fixed, I checked with a neighbor (local High School Auto Shop teacher) about having is students perform the turbo install, but it turned out it was too late in the school year and next year the program is undergoing some significant changes), so I ended up not getting started with the install until the beginning of July 2017. With delays ranging from a family trip, summer rain, the typical Houston heat & humidity (I hate working outside when it's humid), the flooding associated with Hurricane Harvey, and some extra delays to make sure I had oil properly pumping thru the engine, today, I finally got everything to the point where I was able to start my Hahn Stage 2 Turbo kit for the first time, but I have not yet driven the Slingshot with the turbo since I have a couple questions.
1 - I have an Innovate Motorsports SCG-1 AFR/Boost Controller that I am using just to monitor Boost and AFR. When it first gets electricity, it displays a message that it is warming its dedicated O2 Sensor. IIRC, it takes about 30 seconds before the sensor is warmed and the gauge begins to display its values. Should I wait for the warming process to complete before staring the motor? Note - After buying the SCG-1 and its associated data Logger, I came across the Koso X2 waterproof Boost/AFR/Temp electronic gauge, which I am considering as a more durable replacement for the SCG-1, which like AEM's Boost/AFR gauge is not waterproof.
2 - After I started the motor, the SCG-1 showed a negative vacuum at idle (around -18" Hg) and an AFR rating of around 19-20. This should indicate a severe lean condition that is NOT compatible with engine survival. There is also a strong smell of gasoline in the exhaust which I assume wouldn't be there if the engine is really running as lean as indicated. I think I read that connecting the MAP Sensor with the Hahn kit backwards will cause abnormally high AFR readings, although I believe this was an issue with the earlier Hahn kits and shouldn't be a problem with my kit since mine was shipped to me at the beginning of November 2016. Any ideas on what might be causing the odd AFR readings? I'm reluctant to actually drive my Slingshot until I've resolved the AFR readings. Any assistance appreciated.