Review on JDMON Compatible Performance Ignition 2000 2009 by Anthony Parker

10mm was easy to fit but I had a little more time and money for my truck than I did need too but its a 2009 chevy silverado 5.3 v8 vortec i only get 15 mpg and i need more gas every time i drive it. So I need to know what else I can do to help with gas mileage, power and torque. Let me know I already have an aluminum cold air intake with a K&N cone air filter with a waterproof bag so no water. Blocks the motor and E3 connector on it.