Stage 3 testing on the AVO Turboworld Japan BRZ
We've been hard at work here at AVO on a variety of projects, with possibly the biggest one right now being the Stage 3 upgrades for the AVO BRZ/FR-S turbocharger kit. Our Stage 1 turbocharger kit has been incredibly popular worldwide, and has made a lot of people very happy by bumping the power up dramatically, from 165whp to 260+whp. Yet some people want more, much more, and we've listened to their requests.
It would have been easy enough to just up the boost and get a few glory runs on a dyno, but we are far more committed to our customers long-term enjoyment than that. We wanted Stage 3 to be as reliable as possible, with all the high-quality engineering and attention to detail that has been a trademark of AVO for the last 40+ years.
To this end, we spent a considerable amount of time and testing on our fuel pump upgrade, as the car was already starting to reach the limits of the pump at 300whp, and we were planning to go much further than that. After much time and effort, we have now got a full bolt in, no fitment compromise fuel pump that does not require any re-wiring or dremelling. It clips right in to the assembly, and doesn't require you to have the fuel filter mashed up against the bottom of the pump housing. The standard wiring harness will clip right into it as well, and it doesn't require additional O-rings to seal up.
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Matched up with that is our upgraded Port Injectors. These were also designed to fit to the BRZ/FR-S, with the longer "neck" on it so that they reach down into the intake system and spray properly, unlike some other "short" designs that merely let the gas puddle down. Put these together with the fuel pump, and we now had the fueling to push the engine further.
But why so much extra fuel? Because we upgraded the turbocharger as well! The Stage 3 turbocharger utilizes a new billet compressor wheel with a more efficient design. While the overall size of the turbocharger hasn't changed, the flow has improved dramatically enabling us to push it harder at higher boost levels. This allows up to bump up the peak horsepower available while keeping the impeccable low-end torque that makes this turbo kit such a pleasure to drive.
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The final piece of the power puzzle is the complete 3" exhaust system that will come with this kit. We don't mean just from the cat-back, no, this exhaust is 3" from the turbo charger exhaust housing back. The turbo discharge pipe and crossover pipe have been re-designed to provide maximum flow from the turbo all the way back.
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As part of the testing we recently put the Stage 3 kit through it's paces at the RevSpeed Super Battle Time Attack at Tsukuba Circuit. It went very well, with the car going roughly 1.5 seconds faster around the circuit on the exact same tires as earlier in the year. Power through the corners was very well controlled, and it was a rocketship exiting the corners and on the straights.
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Immediately after the event we put the car on the dyno to see how it was doing at the race settings. Power was quite impressive, with 373whp on tap at 6400rpm, and a peak of 318ft/lbs of torque at 4800rpm. Even more exciting is how it was doing 290ft/lbs of torque from 3300rpm. This is a quick-responding turbo!
We are still undergoing testing, but expect to see this available soon from AVO!
