With a custom tune you would be able to run a 3.2" pulley (12psi pulley), given your proposed mods. Otherwise with a standard tune or one of our memcal tunes, the most you can safely run would be a 3.4" pulley (10psi pulley).
I'm looking to upgrade the boost on my L67 VY Calais. I'm planning on buying a CAI and I'm wondering what the possibilities for boost pressures are if I was to run a CAI and a tune. Is it possible to run more than a 3.4" pulley with a tune?
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