Boost controllers are easy power. They allow you to turn up the power liketurning up the volume on a boom box. Just watch that air/fuel ratio...go too farand the boom will come from the engine not the box. With the AVC-R set to .50kg/cm2 (7.36 psi) the MSP belted out 191.0 whp. With the max boost set at .60kg/cm2 (8.82 psi) the Mazda pumped out 210.2 whp and .70 (10.29 psi)delivered 219.3 whp. Despite some detonation we jumped the boost to .80 (11.76psi) but were blind-sided by the factory fuel cutoff. The party ended at 225 whpbut extending the graph of that run showed we were on a 242-whp pass.