[dieseltech24179]

So the supra started today and I decided to check ign timing. I jumped the two terminals and when I checked it it was way off like past 15 btdc so I adjusted the cam pos sensor via the little slot and brought it back down to 10 btdc and when I ran it it would only boost up to like 3 psi and then let off like that was as far as it would go but before when the timing was where it was at before I set it the car boosted fine like 7.5 8 psi. What's goin on here. Thanks in advance