I wouldn't risk it. If you do decide to try it then I would do it in VERY slow fashion. Only up the boost a little per time and monitor you spark plugs in between each run. I would only do it if you have access to some type of data logger that way you know exactly what your car is doing. But if you want to try the "trial and error" method you can and just do it, but if you do have the bad side of the trial and error then you could be rebuilding again. Just ask Mikey