gotrice, yes thats where you hook it up, i dont have one of those so mine had to be made up, but its the same thing
ok pic time.
this is how i have mine setup
LOL i didnt mean what psi is best for drifting n 0-100 i ment whats the best way to have the boost controller set up the way where u get a spike or the way without a spike :D
don't use a bleed valve controller, use a Grainger valve controller instead, fits between the compressor outlet and the wastegate actuator diaphragm, it completely blocks the signal to the wastegate until the desired boost is achieved, the car boosts quicker with very little spike.
check out these links, it's sort of a mini BOV, you can adjust the pressure it opens at by turning the lock ring.
I made my own for my sigma, out of about $20 worth of plumbing and engineering parts. They're pretty simple, turn the knob to increase boost (requires more boost to move the ball bearing and allow air to flow)
How much improvement will you notice over a bleed type, i have a greddy in car controller bleed type i think, don't really want to change unless it is REALLY worthwhile