If you have the 9 psi pulley and the Si trim then you should be seeing 14-15psi without a filter. By only getting 11.5-12 means there's something else wrong. It has to be a boost leak, belt slip, or pulley sizing issues.
I see you have a lightweight crank pulley. Tiny increments in that will make huge moves up top. Start there.
__________________
ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM
|