meth is a great way to cover up some knock and to maybe bump a little timing up, but it seems like our cars tend to drown in it when you put too big of a nozzle on making the car boggy and just overall fall on it's face. i ran it for about 6 months, and although i was running a non-intercooled rocker setup on a 3.2, the car just didn't feel fast. it felt better on a 3.4 without the meth, really.
i say if you're gonna do it run a really small nozzle and just use it as a fail safe for random knock introduced by varying weather conditions and driving periods. i wouldn't be using it as a secondary intercooler.
