Originally Posted by banzai
i wasn't asked, but i start spraying at 7 psi, and my max is set to the top of the scale.
i run SMC....and only 18.2 lbs of boost peak.
Banzai and CC,
Thank You for your input. General Consensus looks to be a 5-7 psi setting before the system becomes active (spraying) for most with typical WRX Stage-4 (me, sorry I didn't state my set-up in the initial question) modifications. STI's look to be similar. I've also found other posts from different threads on NASIOC & IWSTI recently that seem to support the "1/3 of total boost before activation" rule.