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Increase the boost on your turbo to above the 21psi stock setting and up to 35psi and up.
Installs in place of the brass fitting on the compressor housing.;Quick 5-10 minutes install.
Will fit stock Cummins Holset HX35W, HX40W, HY35W, and aftermarket S300's
Has Allen screw to adjust the amount of air that the turbo compressor side allows to reach the actuator for the waste gate.
Boost increase from stock 21-22 psi to 35psi or more with require use of a programmer, module, or boost fooler found at all diesel performance shops. Higher pressure without either of this will trigger codes
Will not work on 2001~2002 auto transmission with turbo P/N 3592811 or any stock turbo newer than late 2004 build after 01/05/2004 due to the electronic controlled actuator. Stock Holset turbos should not be set higher than 35PSI without risk of damage as well as Stock engines should not see higher than 45PSI without risk of damage.