| Don't hold your breath for the T25 flange version of turbine housing. They will not be release until next year, late next year at best & maybe 2020. The 0.49ar turbine will choke the flow badly & create high back pressure, everything is a trade off. A very highly developed Time Attack Skyline has a twin G25-660 setup. They found the 0.72ar turbine to be to much back pressure for their setup. When they switched to the 0.92ar they made over 1,000hp on a billet aluminum block, stroked, CNC head, custom everything from the best of the best, $20,000 motor etc. IIRC Chris Forsberg's drift 370Z made 850whp with more room for improvement on his VQ37 built race motor. This was tuned by Shane T., a world famous tuner that has worked on some of the fastest cars in the world too. You will be hard pressed to hit 1,000whp on the G25 turbos on a VG30. The G25-660 with 0.92ar turbine will be the best bet. The 0.72ar turbine will be the best fit for the VG30 IMHO. The time to torque may be great with the 0.49ar turbine, but I bet it will drop quickly after peak as well. When pushed hard, it will contribute more heat into the system also. I'm thinking of trying them on my street car my self. I have my EFR kit & 4 more EFR turbos from Indy teams to make kits for also right now though.
~Induetime~ "Lag Less"
First Stock Turbo to break 500WHP on boost alone (Pre-E85).
New track car project "Diseaze":
http://arizonazproject.wordpress DOT com
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