When you bump up the boost, it might be a good idea to do a couple test runs with a fuel pressure guage hooked up. I have a wierd problem where the pressure doesn't shoot up immediately, instead on its way up it waits for a split second at 6v and then instead of going through 8v and then 12v it goes straight to 12v. This causes the car to run slightly lean at for a bit and it pings then the fuel comes on and everything's ok. I'll probably end up getting an adjustable regulator... and AFC too pretty soon.