I'm not sure how big of a difference it'll make, but it puts out 35K volts, and that sure can't hurt!
If you really want to make an improvement, upgrade your exhaust. I just picked up my car a couple of hours ago, after removing the cat and getting 2 1/2" pipe all the way way back. Holy Cr_p!!! After 4K RPM, it's a completely different car! It now pulls extremely hard all the way to 7500 RPM!! I'm actually a little scared of how hard the car will pull after the FMIC goes on!!
--R