1) You can leave the stock boost jets in the vacuum line and install 'welding tips' in the pressure feed line. The smaller the orifice, the higher your boost will be. 2) You can instead install the 'welding tip' in place of the stock boost jet in the vacuum line, the smaller the orifice, the lower your boost will be. In either scenario, you can also replace both 'welding tips' with a manual boost controller and have the same effect.
Or you can do it better and use an EBC :)
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