92hatchLX

On a belt driven S/C, U/D pullies will slow it down making less boost.

bighungrymatt

good to know, thanks guys, no u/d for me

I will eventually get a h/c/i kit once I get the $$

luckythirteen13

what rpm did you pull to? the kit you bought might have been set up to run 9psi at a higher rpm then your pulling to

2 kwik

you don't use under drives pulley because of the crank pulley for an s/c

bighungrymatt

we pulled it to 5800 rpms. thats probably why we didnt make it to
9 pounds... thanks I didnt think about that

black89gt

or maybe your belt wasnt that tight? happened on my cousins g35 vortech supercharged.. his belt was loose and he was only pulling 3lbs. he bought a new belt and tightened it and now he is pulling about 7-8 psi. like .7 bar