p1x 4.13? or 4.25?

[BBW P1X]

I have stage 2 2015 GT on p1x and want to know experiences on the 4.13 or 4.25 pulley, number possibly and or boost (i understand all cars run different).

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[SolarFlare]

In good weather with no inlet it will see about 12.5-13psi with 4.25 at 7600 and about 13.5-14 at 7600 with 4.13. In subpar weather is like 12 and about 13 respectively.

 

[BBW P1X]

In good weather with no inlet it will see about 12.5-13psi with 4.25 at 7600 and about 13.5-14 at 7600. In subpar weather is like 12 and about 13 respectively.

okay yeah, AZ has some hot weather 105+, i currently am at 7500 rpms on the 4.38 and i just want a little more power for now, it will get better though once it cools down here though

 

[SolarFlare]

Should make about 30whp more

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