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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.

Check out more of our FR-S and BRZ testing here!

Source

Crawford Performance

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Comments
Der Bruce
Der Brucelink
Tuesday, March 25, 2014 10:59 PM
Mike, after three days in a row, I can safely say you're a writing machine....or you saved these up to pull the staff through Spring Break! Either way, exciting stuff from Crawford. I was thinking that some forced induction might be a more exciting way to test out these spacers but bolt ons should be fun, nonetheless. I'd be interested to see the Dyno results before anymore parts(ie. A few weeks or month out) to see if the ECU pulls it back like with a lot of the other mods out there.
Crousti
Croustilink
Wednesday, March 26, 2014 5:48 AM
Little tip here to keep the orings in position: put vaseline on them. They become a bit sticky, yet it allows to also move a little bit more when in place, helping to seal better (when bolting, they will take the best position). It also protects them a bit, so they last more bolt/unbolt action. I started using that method to seal fish tank external filters and i have to say it works wonders.
Ben_G
Ben_Glink
Wednesday, March 26, 2014 6:55 AM
Would be interesting to see if the ECU detunes things back down again like it has been doing with every other non-FI upgrade....
Mike Kojima
Mike Kojimalink
Wednesday, March 26, 2014 10:28 AM
We will test again after some miles but Crawford has told me that the power will stay.
Der Bruce
Der Brucelink
Wednesday, March 26, 2014 11:57 AM
Speaking of FRS/BRZ....we getting an inside look at Dai's BRZ after this weekend?
Mike Kojima
Mike Kojimalink
Wednesday, March 26, 2014 12:40 PM
I will do it after the car passes Formula D tech and we are approved for Long Beach.
Der Bruce
Der Brucelink
Wednesday, March 26, 2014 7:49 PM
Thanks, very excited!
mbretschneider
mbretschneiderlink
Thursday, March 27, 2014 7:34 AM
Please, mr Mike, i have a question: This manifold spacer (or any manifold spacer of a simmilar engine) sits in between the intake manifold and the head in a way that makes the injectors to be positioned farther from their original mounting points, relative to the engine head?

If so, doesn't it makes the injected fuel to "puddle" in the spacer before being rammed inside the valve opening by vacuum, disrupting the factory proposed "ideal" flow for the spray of fuel?

Sorry if i make it hard to understand, i am not a native english speaker (and i am self thaught at it).

Thanks for your time and consideration
Mike Kojima
Mike Kojimalink
Thursday, March 27, 2014 10:45 AM
The spacer is above the injectors.
Ben_G
Ben_Glink
Sunday, April 27, 2014 8:54 AM
Any idea if the gains made by the blocks have stuck, or has the ECU tuned it back down?
Nick A.
Nick A.link
Wednesday, September 17, 2014 7:47 PM
If this was added to a system with a 4-2-1 header design, would it even everything out? The Power Blocks for down low with a small peak reduction paired with the EL 4-2-1 header for the peak increase and slightly less down low (compared to a UEL. Still better than the factory EL due to primary and secondary sizes). To me that sounds like an even trade off for overall power and responsiveness. Am I wrong?
curtdragon
curtdragonlink
Friday, June 16, 2017 2:25 PM
2017 update? Did the power stay lol
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