hii have a 2003 gmc sierra. it has a 5.3 L i want to make it faster?

Larry M

New Member
You can spray about 100 horsepower "100 shot" of nitrous without breaking it, just make sure you don't use the programmer while spraying and I recommend a wet kit. Call or e-mail nitrous express and they will show you the proper kit to use and you feel a whole lot more torque and horsepower than the programmer will give you.
 

Jake B

Rookie
From this point on you get into more expensive upgrades. A catback exhaust is probably the next cheapest upgrade, but I would go all out with headers high flow cat and larger diameter pipe. There are quite a few companies that sell kits. After that you are getting into the motor, cam etc. You can change your gear ratio to help but again, that is expensive, especially if it's a 4x4. Good luck!
 

Jake B

Rookie
From this point on you get into more expensive upgrades. A catback exhaust is probably the next cheapest upgrade, but I would go all out with headers high flow cat and larger diameter pipe. There are quite a few companies that sell kits. After that you are getting into the motor, cam etc. You can change your gear ratio to help but again, that is expensive, especially if it's a 4x4. Good luck!
 
Top