Well I just borrowed my friends Hallman MBC and hooked it up in my car. I've always been telling him EBC's > MBC's, and after installing this boost controller, I have nothing negative to say. Boost hits sooner and I hold 15psi to redline in every gear now (except first) and no spiking. Plus not to mention its gonna cost me $95 compared to the Greddy unit $320.