Go Fast Bits Atomic Manual Boost Controller
GFB puts the key to boost control in YOUR hands!
Your EVO utilizes factory boost control, most of which display a
tendency to be conservative in allowing the boost to build up, and then
taper away noticeably toward redline.
A GFB Boost Controller however, not only allows quick and easy boost
level adjustment, but it can also reduce the boost threshold (the RPM at
which boost starts to rise) and maintain a rock-steady upper limit.
Fits: Universal - Fits any TurboCharged Vehicle
Part # 3001