http://opposedforces.com/parts/legacy/e ... tration_3/Number 12, injector sub assy, usage info:
http://opposedforces.com/parts/info/16611AA720/Iirc it's a 600 ish injector, raise the base fuel pressure with an aftermarket regulator if your tune requires a little more headroom, support that with a bigger pump...
But fixing any leaks or avcs issues would be the thing.
Depending on mileage a new oem front o2 sensor might be a good idea, plus new stock sparkplugs.
Either way keep the tune conservative for postfl longevity...
Look at a compressor map for any vf series and you'll see they're at maximum efficiency around 15-18 psi, any more than that and you're making hot air, compromising your inlet charge.