Theoretically it will get better mileage, but that's only if I can keep my foot out of it. It also has the ability to burn more fuel, and I've been taking full advantage of that! My last fuel up was 22.9 MPG, but that includes at least an hour at close to WOT going over a mountain pass both directions. Odometer correction for my new tires is 2%, which equals about .5 MPG more on that fill. I figure that's about the absolute worst it can get. I'm hoping to crack 30 MPG under normal conditions, but we'll see... The guys who have swapped this engine into Rangers that weigh about the same as my Jeep are getting high 30s to low 40s. They mostly use theirs for extended highway travel, something I have never done except jumping over the pass, so the difference could be that, my awesome aerodynamics, or my tendency to drive it like a sports car.
I'll eventually get used to it and be able to drive like a sane person for a whole tank. I use Fuelly to keep track of every fill. I wish I could add a signature line, but here's the link if you want to follow.
https://www.fuelly.com/driver/redveloce/wrangler
So far my experience with the methanol is great! I did some tuning last night (lots more WOT runs and hard pulls...there goes the mpg again...), and set it to kick in at 8-9PSI boost. I can reach that level with a mild easy acceleration, then when it kicks in I can back off the throttle a bit and it keeps pulling like I was rolling on hard and EGTs drop by about 200 degrees. There's a very steep residential hill that I sometimes take as a shortcut around traffic on my commute that I use to gauge the progress of the engine. It is extremely steep, and you turn from a stop sign at a right angle directly onto the grade. Running up through 1st and 2nd is no problem, but I often can't run 3rd gear because shifting into 3rd at the governor in 2nd takes RPMs below peak torque and it can build a lot of EGTs without gaining any RPM in that scenario. I tried the hill today, and ran up to 3rd, keeping the throttle stuffed to the floorboard to see how much heat it would build with 100% fuel and the methanol engaged. EGTs wouldn't budge over 1025 degrees, and it pulled well, steadily increasing RPM.
*edit* Oh yeah, I may get it dyno'd at some point, but I'm not expecting it to be extremely impressive. I had a rematch with a Prius yesterday though. Kicked his ***...
