It can be kinda tempremental with the big shots, with the smallest jets (15 horse) it runs awsome and just feels like a second powerband when you hit the button but with the big shots (35+ horse) the bottle pressure has to be perfect and constant otherwise its really rich or really lean.
Ive lost a few races when the bottle pressure drops and bogs the shit out of the motor and Ive also lost a few when its been to high and just pinged its ass off!
When its right tho its friggin awsome, the fastest thing Ive ever owned period. Ive got a 500+ horse truck that this thing would just walk away from.