well after installing my boost gauge on my supra i noticed in the higher rpms 3800ish , where #2 should be comming on line all my boost from #1 (10psi) would drop to 0. I did some searching and talked to a few other supra owners and they said to try TTC. As I was doin the TTC when I went to do the actuator under the car i noticed the control arm was broken off the door. I wired the door and open and the top door went for a cruise, 1st pull 2nd gear 7-8psi in the 5000rpm range( seems its working) 2nd pull 2nd gear same thing, 3rd gear psi. after the 3 pulls i went back and just checked everything and fixed the wireing for the 2 actuator with the broken door, went back out and guess what no more then 3psi. i dont remember what my Vac was before the pulls but when i was getting the 3psi my Vac is 16, i was told it should be atleast in the 20s, around24-27. Could a Vac leak be the cause of such a boost loss?
