ok guys i have a few questions about pulleys for my s2000. i have an 05 running a comptech novi1000 s/c non-aftercooled. along with it i have a mugen catback, fuel pressure regulator, what size pulley can i run safely? any info would be appreciated thanks

 

for the ap1 it's the ap2 pulley aka 7 psi pulley. so, i'd assume with only the rr fpr for tuning you'd want to keep it under 7 psi, 8 psi absolute max...

see scienceofspeed.com for pulleys and information...