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We are now ready to dyno. Our install time was about 30 minutes. Your experience may vary but we took our time and taking pictures wasted some time as well. To be fair, we are somewhat used to taking the manifold on and off on this engine as we have done it a few times.
The results! At 148.2 wph and 118.3 lb/ft of torque, this BRZ is the most powerful FR-S/BRZ we have yet to test on our conservative Superflow dyno. These cars typically run in the low to mid 140 hp range on our dyno. The Crawford Performance Power Blocks intake manifold spacers made a big difference, the car put out 152 hp @ 6500 rpm, a gain of 4 whp. Torque was 126.2 lb/ft @6200 rpm, a gain of 8 lb/ft. The peak power gain was 11.5 hp @ 6200 rpm and peak torque gains were pretty much 8 lb/ft. The FA20 engine also gained about 2 lb/ft and 4 hp below 3200 rpm. Around 2 hp was lost past the power peak beyond at 6800 rpm. This loss is insignificant compared to the large area under the curve in the useful part of the powerband that the engine gained.We feel that the Crawford Performance Power Blocks intake manifold spacer makes the largest non forced induction power gain of any single part we have tried to date. It is also probably the biggest bang for the buck power gain. Yes, the spacer did lose a tiny bit of power past the peak and the peak is a few hundred RPM lower but when driving the car, we are no longer constantly bumping off the rev limiter as we used to. You can definitely feel the gains of higher mid range power and the car accelerates harder. In the future we will pair the Power Blocks up with an exhaust, header and intake so see if we can get some of the lost very top end back and more.
