So, it looks like I'll be installing an EI CGR-30P Premium on my 172SP in October or November during annual. Looking for folks' experiences with this device. Been happy? How reliable has it been? I'm in the SF Bay Area. Thinking about flying out of state to pull the cost down. Anywhere in Oregon or Nevada that would be recommended for this major upgrade? How many days did it take you to install it? Trying to figure out the best method, maybe pair it with a vacation. And yeah, I know what everyone is going to say: Why do you need an engine monitor on a 172? Turns out it should be the cheapest way to deal with some of the issues I've been having. Some of you guys may have been tracking my fuel sender issues. I did replace it with a new Rochester sender, but now I'm getting issues on BOTH sides! I'm so, so done with Rochester anything. CiES is going in, and it requires a new fuel gauge. $1000 for the gauge or $3,500 for an engine monitor is an easy RoI tradeoff. My clock/timer/volts/temp gauge is also failing, so there's another $500 being fixed here. Drops some round gauges, drops some weight, gets me more data. Overall seems a win given the situation.