Originally Posted by 2phless
Biggest problem with the MBC. No control. It's a spring. It has no way to know you are approaching an RPM. It only responds to pressure on the boost side of the turbo. What you want is an Apexi AVC-R or EM like a UTEC or similar.
hmmm my mbc has perfect control, allittle to perfect it holds the set boost pressure perfect all the way to redline. but ive heard from a few people that this could be bad, but im also wondering if that stands only with the factory turbo, because my vf-34 is still efficent at 17psi.