I'm another very, very happy user of Ben's customised Snow Performance Stage 3 kit I use it in my daily driven 2JZ-swapped Soarer (Lexus SC), spraying about 55:45 meth:water, in addition to 93AKI pump fuel. My peak numbers were 640rwhp/570lb-ft SAE at 25psi boost on an unopened motor, backed off to 600rwhp/540lb-ft for maximum safety.
Although I have E85 about 30 minutes drive from home (assuming minimal traffic ...), it is inconvenient to get to and the last thing I want to be doing when I get home. I have ready access to a supplier of pure methanol and distilled water is cheaply available, even in the local supermarket
WMI is just as amazing as Ben has made it out to be In a nutshell, it has :-
a) (quite cheaply!) allowed me to use much higher boost and ignition timing advance than 93AKI pump fuel alone, and
b) more importantly, to allow this extra performance to be repeated even in high ambient temperature.
Although a good FMIC setup also drops IATs, it cannot possibly do so in high ambient temperatures, and nowhere near as much or as rapidly. On the road, in my daily driven application, I have seen a 50% drop in IATs from a heatsoaked standing start in traffic within three SECONDS - travelling at relatively low speed.
On the dyno, it is just spectacular. I drove 80 miles to and from work, straight to the dyno, and without any cool down time or special preparation, ran my street boost (20psi) peak power numbers straight off the bat. After 2 hours of flogging at high boost, the engine bay was very hot, but the inlet manifold was almost ice cold, with logged IATs reflecting this.
A repeat 20psi run at the end of the dyno session - again with NO cool-down time after NUMEROUS 25psi runs - yielded *exactly* the same power figure as the first time. That is the beauty of WMI - it allows the same result to be repeated run after run after run.
In terms of raw timing numbers, we were able to advance timing by over 6 degrees at peak torque compared to regular pump fuel without a hint of knock. For safety's sake, I backed this right down to +3deg, but my tuner, who is very experienced with E85, has stated that my timing numbers are at LEAST on par with E85. It also allows me to keep my fuel system very simple - basically stock.
As far as peak power goes, I can only compare numbers pre- and post-WMI at the 20psi level. I gained just under 30rwhp, but as above, it was a consistent gain regardless of ambient conditions. WMI also allowed me to maintain a gain of 20hp/lb of boost, run after run, WITHOUT leaning on the motor unduly. With aggressive tuning, we saw 30hp/lb of boost gains!
The only "downside" is having to refill the reservoir and in my case, mix my own brew of water and methanol, but this takes very little time or effort and I top up weekly.
The price is the kicker. Race fuel costs upwards of $6/L (~$24/gallon) here. My own mix of water:meth costs just on $1.50/L (~$6/gallon)! My controller is set up to spray early and in high volumes, but my 2.5 gallon reservoir would last about a month with normal driving, and obviously much less with spirited driving
Finally, for a daily driven car, fuel economy is actually important. WMI allows you to run leaner than one otherwise would if you so desire; all my reading suggests you can tune for mid-12s:1 AF. I actually ran like this initially on a street tune, and gained 20% fuel economy without any knock!
Ben's customised kit is of very high quality and about as close to plug and play as possible. His before- and after-sales support is peerless. I unreservedly recommend purchasing kits from him. Thanks a lot, mate