Maximum safe BHP for stock 1.5 with turbo

[Yoda]

Originally Posted by Blown_xa

from my experience, 150whp was the limit (on our dyno). I blew up 4 or 5 stock motors unfortunately (because I was greedy ) before building one. 2 of those were not directly related to power output... I once had my meth nozzle clog so detonation occured , thats why I always recommend a flow rate gauge to customers running wmi. If the car is tuned mbt with meth, and the pump fails or line blows off.... motor go boom even a built one.

150whp is still fun in our small cars for sure, considering 86whp stock! Ive posted videos of track time with 130whp and still passed evos and s2000's . A little hp gain counts for a lot on a car around 2300lbs.

Got to agree here. For safety and longevity all the Toyota forums I have seen said the same thing. But I still think if it's tuned really well then 8psi no problem. By tuned really well I mean pro tuned. There was a guy that ran a test(will try to dig up the website later) that showed 5-6psi was safe but when he cranked it up to 8psi engine blew after 6 months of tracking. It also depends on how you drive your car also. How often will you see high rpm?
Street or track use?