Throttlw body or Underdrive crank pulley

[eclipse13]

I have a project for school where I am installing a header and one other thing. Should I go with an AF/X underdrive pulley or a bigger throttle body. I need to know performance aspects as well as effect on the car. Will either mess my car up or lower the life of it more than the other.

Cost isnt really a factor

 

[97eclipseRS]

you dont need a 60mm tb yet since you arent boosting. get the udp. its a good bang for the buck

 

[GSGoinFast]

you dont need a 60mm tb yet since you arent boosting. get the udp. its a good bang for the buck

right. if any thing go with a 55mm tb. but the udp will give you better gains now.

 

[aliczander]

right. if any thing go with a 55mm tb. but the udp will give you better gains now.

i concer, man i gotta start wakeing up earlier, chris steals all my answers jk.. hehehe