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Discussion Starter · #1 ·
my friend bought his 1.8t last week and he is installing a mbc tomorrow, but i was wondering if it'd be best to run a 4bar fpr over stock. he already has a generic muffler, greddy fmic, forge dv, chip (im not sure which), newsouth powergasket, cranked wg, and cai. he got a forge mbc in the mail today along with colder plugs and he asked me to help him install them tomorrow. i believe he is planning on bypassing the n75. he is currently spiking at 17psi, and he wants to adjust the mbc so that he spikes at 19-20psi. i was just wondering, would he be better off with a 4bar fpr since the boost levels will be raised this high?
 
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