I can't boost lower than 14-15 PSI and I think my O2 sensor is out

[iceminion]

The O2 sensor is extremely important, a properly running car needs one, I wont say that simply replacing your broken O2 sensor will fix all your DSM's problems, but when it comes down to fixing a dsm, you really cant be half-assed about it, fix what you know is wrong, and then go from there

Personally i would never trust my engine's life to a boost controller that I concocted, this is another example of why half-assing your dsm just wont work.

So please, take it from someone who has been where you are now, its not worth your time to try to duct-tape fix it, just cough up the money and move on, hell, a used o2 sensor should be really cheap, its no big deal, just buy a new one