they have For a 5 to 6 lb. Increase in Boost over the Factory 3.35", use the DUB 2.80" SC Pulley System. (*** WARNING *** All DUB SC Pulleys Smaller than 3.00" will need ECU Reprogramming, Sparkplug Change etc. to attain Max Boost & Horsepower levels)

http://www.southfloridapulleyhq.com/index.html



im gettin an 05 SS s/c and after i get the intake and exhaust put on i want to put a 2.80 pulley... how much would it be to reprogram the ecu or is there one that i can get that i dont have to program??

 

um repost! do some searching