That sounds about what I got, my issue was once I hit half a tank my dots went from half to zero in a day and half (where the first half is like 2-3 days) with no real driving changes. My last 5 dots are basically worthless, once it hits those I need to be going to a station.

From my understanding the gauge is not 100% (especially range) because the injector size changes and the computer which outputs that info is not able to change. So your range and dots will not be 100% accurate right?

Ur right. once you switch injectors n fuel pump the computer is no longer accurate. Have to check your mileage manually.

MPG isn't accurate, but Dreamer is saying the gas level gauge also becomes inaccurate. Can others confirm this? When I am lower than half tank, the dots go away quicker even NA, is this what Dreamer is referring to or is it significantly more so supercharged?

No, that is what I am referring to, seems the dots are not the most accurate below half a tank. That gauge is basing all its assumptions off your range, injector size, etc. And once you start messing with tuning, injectors, and such it throws it off.
MPG you just do manually, I think mine reports out I get 30MPG now which is not close at all. Range will usually over estimate at first but after the first 30 miles it comes close to what I usually get per tank but I never have it on that screen. I keep it on outside temp.

I like when it says I have 60 miles left till empty,that mean I need gas right now.:roflpuke2:

But lets say you go lighter wheels, pulleys, clutch/flywheel, rotors and you should get that back.

Easiest way to check CL is buy a AFR gauge. If you drop out of 14.5 fast, like a 1-4 drop, you're in open loop. You can do CL all the way to redline. Just press the throttle easy.

Bu then we're not comparing apples to apples anymore. If you mad those changes to the setup without the SC, then the MPG would be even higher which would mean you are still losing some, relatively, with the SC right?

True. Just saying info I guess

It's good info, we all know we'll lose mpg with a SC, just trying to get a better idea of how much for people who do care about that as well. That is good info, though to help out if someone lost more than they expected, though the clutch/flywheel is only for manual drivers.