t16
i kno the Mahles piston arent as good as forge but when i was 22 i had a 220 gti which i converted to a turbo running 18psi with a T28 turbo with out any issue cos i had the fueling set up cos when i was 1st ran on the rollers it was under fueling around 13.5psi once the fuel pressure and and fueling was set up it ran sweet and never gave me or my mate who had it off me any issue for over 3half years and it took a lot of sh1t over that time and still ran fine when he sold it where AE pistons 12psi is max really you wouldnt wanna go above 10psi to be safe
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