Procharger won't boost higher...?
03-28-2017, 03:19 PM
#12
Need some idea's here, trying to figure out my buddy's truck. 2004 5.3 scsb, had cam and full exhaust then I put a p1sc on it, it made 7psi with a 3.7 pulley. Changed to a 3.5, then to a 2.8, still only 7psi. Figured maybe the 108 LSA cam was a problem so I did milled 243s and 224/233 114 cam, still only 7psi. Made sence if the blower was maxed out, so we switch it out to a 12 rib belt drive with a f1r blower, has a 4.75 / 7.5 pulley combo on it now, went out and tryed it... Bam 7psi of boost. The recirculation valve was replaced with a big red pc bov, air to air is also replaced with a treadstone unit. What on earth could be regulating the boost to only 7psi? Next step will be to pull the intake rockers off a pressure test the entire cold side, just wanted to see if you guy's could think of anything else it could be before I did it. Thanks
03-28-2017, 08:02 PM
#13
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Well they where all upgrades we planned on doing anyway, the procharger air to air was junk, cam was a old n/a cam, and the p1 was very limited on the power it can make. After 1000hp on this thing, we where just very stumped once this big blower didn't pick up any boost.