Quote:
Originally Posted by Nissan370
thxs for the info sir.
so stillen kit
3.12 stock <-----was seeing 9psi
2.95 upgrade 9lb pulley <--- seeing 10.5psi
2.75 upgrade 10lb pulley <-----(should see about 11-12 on the very top)
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The 9 pound pulley is 2.75. For some reason Stillen didn't drop down to the next pulley size. I measured it and compared it to the 2.87 vortech 6 rib.