Thursday Aug 18
Well I put the Methanol in the tanks and fired it up on the E85 tune.
It ran great as always for a while until the lines were purged out.
I switched the "fuel energy constant" number in the FAST XFI program from .65 for E85 fuel to .43 for Methanol.
It started right up good again and it was a little lean on idle. The O2 sensor reads the methanol just as well as Ethanol.
I richened up the idle and some parts of the map for a minute and it ran good.
Idles just as smooth as Ethanol at 1000 rpm. Great throttle response.
Warmed right up same as ethanol. Didn't run cold like I expected.
Shes ready for the water.
Saturday Aug 20
I ran the boat around for a while today and it ran good on Methanol.
Temp seemed to level off around 140* where Ethanol ran 150*.
After hanging out on the beach for a while other boats were making some passes so as we left I hammered it.
It ran right up against the rev limiter at 7000 rpm and cycled a few times.
The datalog showed WOT for 4 seconds and took it from 30 to 110. Pulled real hard.
I reset the rev limiter to 7500 and tried it again. It still hit the rev limiter. At 7500 rpm it's turning the prop 12000.
The datalog showed 30# boost and that is the limit of the MAP sensor.
Maxxing out the MAP sensor wants to show a fault in the ECU so I have to disable that.
I can certainly see the huge HP potential from Methanol.
It's hard to gauge how much fuel I used but it was noticably more than Ethanol.
Got back home and looked at the oil and doesn't look milky at all.
The fumes weren't as near as bad as I thought it was going to be either.
I need to spend a little more time running it and fine tuning the map. I've only got about 15 minutes into retuning from Ethanol to Methanol so far.
It took me a lot longer to pump the fuel out of the tanks than to switch to the Methanol tune.
I'll save this map and be able to run either fuel.