the limit of stock recircutaing valves.

[DTRUONG9]

I know how the recircs work and how bovs work, and just wanted to know when the stocks start to fail.
my setup
built long block, jwt 550 bb, 740cc inj, full exhaust(msp mani to), dual pop, trust intercoolers, and planning to run 12-18psi

Would i need to get upgraded ones( I was planning to uses HKS and recirc them). This is for longevity of my turbos not for sound. I rather spend the money on other stuff but if its needed for my situation, then ill get them(upgraded ones)

[Z31toZ32]

sounds like you will be making approximately 450 whp... according to tt.net "You could always disconnect your stock re-circulating valves (which you have to do to install blow off valves) and spend 500-600 bucks for blow off valves and what will you get? better performance? No, basically you do get the cool sneeze sound though you aren't going to be any faster than you were before (but you might sound like you are). If by chance you are running boost levels that exceed the airflow capacity of the re-circulating valves (~600+ hp?) then you've probably spent enough money and have enough experience and knowledge to know where the benefit reverses. For the rest of you who weren't in the know, I hope I've helped you save some time and money... "

so, you should be good, but i would seek another opinion as i am no SME.

[vulcanrush]

http://www.twinturbo.net/net/viewmsg.as ... dtSearch=0
" The stock Recirc's can handle more than 40 PSI boost pressure."

[DTRUONG9]

http://www.twinturbo.net/net/viewmsg.as ... dtSearch=0
thanks this link helped a lot and came from some one very credible. I just wanted to make sure before spending $600.