View Single Post
Old 07-05-2015, 05:17 PM   #710
mit_peid
Boosted Noob
 
mit_peid's Avatar
 
Join Date: Nov 2012
Drives: '13 FRS MT KW SC, '05 4Runner 4WD
Location: SoCal
Posts: 883
Thanks: 353
Thanked 343 Times in 175 Posts
Mentioned: 7 Post(s)
Quote:
Originally Posted by BigFatFlip View Post
Took a quick look at my logs, not quite sure what the units are, but I'm reading about 1.7 to 14.2 (psi?) range (up to 6k rpm). Hope that helps.

I think that kind of makes sense. The stock NA engine sucks ~12 PSI of vacuum at idle, and my Rotrex supercharger offsets that by +~3 PSI at idle. My peak reading at around 25 PSI is when the engine no longer has a vacuum and the blower (without the smaller pulley) is pushing about 9 PSI. Someone else can call BS on me but I think that is what's happening. Thanks!


Sent from my iPhone using Tapatalk
__________________
mit_peid is offline   Reply With Quote