Quote Originally Posted by UselessPickles View Post
Some new details about the Precision turbo...

  • It's a $495 upgrade option at the time of purchase of a turbo kit.
  • If you already have a turbo kit with the Garrett, it costs $1350 to purchase the Precision turbo by itself.
  • Unlike the Garrett, the anti-surge porting on the Precision is not optional for the sake of appearances only. It's actually required to avoid compressor surge at lower engine speeds (see holes all around the compressor inlet in the picture I posted earlier).
  • Prodigy reports that you really feel the Precision "kick in" at about 2000 rpm, compared to the Garrett having a similar feeling at about 3000 rpm. Note that this does not indicate where the turbo starts making max/target boost. In a 2nd gear acceleration, my data logs show target boost with the Garrett at about 4000 rpm: http://www.uselesspickles.com/files/...ar_update2.png. The quick increase in acceleration as boost quickly ramps up is what you really notice/"feel". Since the Precision should spool up more quickly (in addition to at lower rpm) than the Garrett, I'm predicting full/target boost around 2500 rpm in a 2nd gear acceleration.
  • Prodigy reports that the Precision makes similar peak power in the upper rpm range as the Garrett (about 370 whp +/-). So quicker spooling, more boost/torque/acceleration at lower rpms, without sacrificing the high rpm rush.


And the most exciting piece of info about the Precision turbo: I decided to take one for the team, bite the expensive bullet, and order one to experience for myself. When it arrives, I'll start a new thread and post pictures I'll take some side-by-side comparison pics of the Garrett vs Precision when I do the install. One of the first things I'll do after the install is create a new 2nd gear acceleration boost chart so we can see exactly how much sooner/quicker the Precision really spools up.
I'm sure I'll need one shortly thereafter. If you can "feel" the boost hitting at least 500rpm lower, then its likely a worthwhile investment.