kolb02

Anyone have a twinscrew and at elevation? I was wondering what boost levels your seeing compared to all you guy's at sea level?

breathegood

I don't have a twin screw on my Mustang, but I do have a roots type blower on my truck. I live at 6200' andthe pulley that wouldgivethe sametruck at sea level 12psi gives me 8.5psi on a cool, humid day. This isone of the reasonsI opted to go the turbo route with theMustang. As efficient as Whipple, KB, and Saleen say they are, you wouldprobably still be very happy with one.However,depending on your elevation, you could probably get away with running the next size smaller pulley tocompensate for the thinner air.

kolb02

Im at 3300ft but corrected is about 6000ft and im running a 11-13psi pulley at sea level and im only getting 9lbs on my guage. Thanks for the info.

modaddict

Just FYI:

It doesn't matter a twin screw or not. ALL Boost is effected by elevation/DA...