Actually my silver cans last a long time. 3-6 months racing 2x's a week. It's the black cans that die all the time. However that still doesnt fix the problem with the variance in speed. Silver cans are not all created equally and the ez run system is the least expensive way to even the playing field.

If you went to the car dealer and bought a car and it came with 127 horsepower and some other guy bought one, paid the same money and got 167 horsies you'd be pissed. That's the same thing happening here. You cant expect to race and beat him if your even close to the same in skill.