I don't have stage 1.. just an 03 auto stick with cone filter, EBC, and exhaust. There is most definately a difference
I was doing around 40 mph on the freeway stuck in traffic today, and the lane next to me was going faster and opened up briefly. I moved over and stepped on it - squeeling tires until i was well past the car that had been in front of me. I'm not talking just a chirp - I'm talking a long drawn out squeeling! My car never did that stock
I'm going to see if I can get some dyno time this saturday to tune my EBC some, I'll post the results if do...