Ok so here is the problem. I have installed a vf30, ebay tmic and all supporting mods. After installing everything snowman tuned my car to run 19psi peak and taper off to about 16.5-17 at redline. The car made full boost and had a perfect a/f ratio. The only problem is that the maf sensor was only reading a max of 230 g/s. Since then I bought a used maf with only 30,000 miles that worked perfectly, to replace my maf which I thought was bad. We hooked it up again today and it did a little better but topped out at 240 g/s. We even bumbped it up another psi and it still only hit 240 g/s. We can not figure out if it's the maf that is reading low, or if the turbo is actually not pulling enough air. Could it be that I need a cold air, or is my turbo not flowing what it should? Anyone have any ideas, at this point I can't figure it out? This turbo should be flowing at least 260 g/s.