Methanol injection?
 

Has anyone tried a methanol injection kit? like one from snowperformance? They say 10 to 15 horsepower for even an N/A Supra, but I was wondering if that is realistic? an extra 15 horsepower for $300 seems like a great tradeoff.... Im also curious about turbo cars too, because a 2jgzte swap might be in the works for me...