The upshot with 4v is thanks to Al Papito and the rest of the 4v community there's better solutions to be had for 4v intakes than ever. B heads do make it harder than c heads but either is a major improvement over the 2v heads in total flow. Navi heads and cobra cams should make at least (totally minimum) 300rwhp. I'd be looking at probably a bit more than that if I were to make a prediction.
I just got the last few bits I needed for my updated fuel system. Now I can put the billet rails back on too. I got a whole crap load of fittings to add a 10micron Trick Flow filter to the mix, after the factory rail adapter and before the fuel rails. Both injector rails will feed individually from a common split point. What does this mean?
The factory returnless system makes the injector rails effectively a single long rail about 3 1/2 feet long with 8 holes in it. Anyone who's ever put a sprinkler system in knows that the more holes you put in the feed line and the longer you make the run after the first hole, the less flow you'll get to the last holes in the run. Pressure loss is a bad thing. So by t-ing the fuel flow off before it gets to the rails and splitting the pressure evenly, I've effectively cut the length of my fuel rail in half and evened up the pressure drop across all the injectors. Not to mention there's all kinds of cool looking fittings and braided lines to add to the massively cool looks it already has under the hood.
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