Propane has been proved to work, but that's just one more fuel to buy.

I still don't really understand the water injection thing. I have a setup that someone gave me years ago to use on my racecar, but never installed it, cause it doesn't make sense to me.

I know a guy with a Dodge pickup. He added a comp. chip, a big exhaust, and one of those 'Air Flow' air cleaners and got 500 Horses at the rear tires. He had it Dyno'd and printed out the results, cause he didn't think anyone would believe it.

I know all the Mustang and Camaro's believe it when he blows them away tho!

Anyway, that may be the best place to start.