Ignition timing related to boost?? Need help

[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

[Bill UK]

A couple or things worth checking: Make sure your strobe/timing light is set at zero, some strobes/timing lights have a dial advance feature which need to be set at zero. When you have set the timing at 10? BTDC remove the service wire link E1 & T (TE1) this is the wire you jumped, the timing should increase to about 15 ? if it doesn’t then the jumped wire didn’t make a good contact.

[dieseltech24179]

Alright ill check it again to make sure. My timing light doesn't have a dial it just has a red button?? This could be like a reset button to calibrate the strobe to the spark. I also had two more engine codes pop up to. The first two I had was just the AFM code and throttle pos sensor code (51 I think). Now I have the knock sensor code and code 14 the ignitor code. But wouldn't my car not start at all if the ignitor was bad? I just put one on it from ebay cuz the old one was torn apart. Also before I set the timing I had intermittant starting problems and when it finally decided to start I checked/set the ign timing. Now it has started everytime after that but I've got those two codes and it won't boost over 3psi.