I'm on a few other web boards. Two of them Dino frequents. I've never seen him claim a 14 hp gain from this swap. I haven't heard or seen him do this swap. The other guy posted that info on one of these boards. If I remember, Dino had simular or more doubts about the gains than I did. I think the swap is worthwhile, though. On Go-Jeeps page he does reference a 25 hp gain on a race motor. I've heard of a few people claiming a loss of power and MPG with this swap. At the beginning of the article, he states he wants to prove what the intake manifold swap is worth. Once he changed more than two items at once, we don't know where the improvements came from. Did the injectors add that much? Was it a combination of injectors and manifold? Did the increase in fuel pressure add the HP? It was a month time span between dyno test. I figure he didn't use the same gas. Thats another change. How much affect, probably slight.
In the other boards post we went round and round about this. He said he would change back to the original injectors and vary the fuel pressure. I haven't seen any results from that. I do think there is a lot in his write up. I do like his flow meassuring setup. I do think the measuring would be better if it was taken at the top of the runner and with an injector installed.