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Originally Posted by diss7
Paul,
Has any testing been done on pushing the system beyond the OEM fuel system capacities? Seeing as your system seems to be theortically capable of 360hp at the crank, then running ~14 psi should result in a safe 300whp? Its the OEM fuel system holding it back..?
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They've been running testing in Japan on pushing the system further, mainly to test the limits of the stock fueling system, not to test the limits of the turbocharger. We've also been doing similar testing here. On their 94 octane, non-ethanol pump gas (98 in Japan) they reached about 280whp, at which point the injectors hit 90% duty cycle. We are seeing similar here.
We'll test larger injectors/fuel pump in the near future, but we are concentrating on the stage 1 turbo kit launch for the present, and after that Stage 2. In regards to a Stage 3 build, you'd be factoring in the cost of rubber, braking, and other upgrades so that the rest of the car keeps up with the engine!
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I guess what I am getting at, is if I can everything the kit is showing on the dyno now, but with 50 more hp, for the additional cost of injectors + pump + clutch, I see this as a cheap cost for an extra 50hp, which imo would be a great street setup.
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Factor in the price of a high-flow catted secondary (front pipe) as well. The OEM unit is quite small, and is a bottleneck once going past 5-6psi.
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Another questions, the ECUTEK system, I take it this is a piggy system? Is this able to be told that there are larger injectors - eg full tuneabiliy on fuel mapping? Can it also adjust timing? The ECUTEK is not common in NZ at all. Sooner just put a link in it, if the ECUTEK is holding it back.
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Ecutek reflashes the stock ECU, it's not a piggy back or standalone. Trust me, we are Link dealers as well, if they had a standalone for the BRZ/FR-S, we'd have one on the car for testing!
Ecutek as a reflash solution, though, can indeed be edited for larger injectors, ignition timing, and more. Plus it maintains the daily driveability of the car.
Edit: Final Note
The turbocharger is not *that* small. We are running it at 5-7psi, but it will push up to 18psi if run all out.