With OEM injectors and an EZ, I gained 63HP and 100 something TQ (stage I kit with a stage II variable controller). EGT wise, I think that I am the only one that is seeing a gain in EGTs. On the flip side, all I have ever run is a50/50 mix, so the extra methanol is burning as well. I am going to be at a 12. 5/81. 5 mix soon, so hopefully I will see the drops that every one else is getting. Now I have stage II injectors and the EZ, so I am a little over fueled (I really need a bigger turbo) then I should start seeing the full benefits.
jrandol dropped 300* (01, ATS stage III, 35/40 hybrid with a 16cm turbine, stage III injectors, and a blue chip box) on his EGTs when we got him hooked up.
In a nutshell, this system works better than advertised for most, and is well worth the investment.