From Paul Lamar's list it has just been posted that the p port engine on the dyno at MazdaTrix with remote fuel injectors is now running very well, developing 220 hp (this sounds like a 6000 rpm number to me but the post did not say the rpm) and it is idling smoothly at 1000 rpm.  I can't speak about 4 ports or six ports but clearly cool side injection will work with 2 ports.   Fine tuning can be expected to find more hp.   Yahoo!!!    Jerry