i have some bolt on mods on my RX but not sure what boost to run and if i need to make any ECU upgrades. Please let me know what steps i need to take.

mods i have:
full exhaust ss 3in mid and down pipes and catback
intake
profec B spec II (running stocck boost)
BOV and some other non performance wise parts.

whats a safe boost to run under these conditions and do i have to upgrade the ECU?

 

With a stock ECU, I would try to keep it at no more than 11 psi. That may be difficult with a midpipe.