He had a 1g with a 14b

I also did it on a 1g with Walbro and a mitsu Garrett -24/14b custom turbo from Dave at Majestic Turbo.

My GSX has a walbro 255, FMIC, and when it had a 14b I ran 20psi, I will more than likely be there again with the small 16g thats on it now. I wouldn't dare go higher than that without bigger injectors and safc hooked up. With the 14B it would hit 20psi and drop down up top to 18-19psi and hold! I also have a potientiometer in the car which should make it run leaner but it seems to make the car run richer. I also run a 6-bolt 1g engine in my 2g