Fmax is a great kit other then the small downpipe flange where it goes to the cat...
get it with out any of the fuel managment and get 4rc injectors hondata and map senser
Im VERY glad I went with Fmax I looked at all my options with custom kits and I've found most people with them that have dynoed their cars have pushed a good bit less HP with more boost
for say Jody in his B16 turbo he put out 240WHP and 190? torque maxing out 550CC injectors at 15PSI
as where I have 440CC injectors and put out 253WHP with 11PSI only main diffrent part was I had a 3" Downpipe
Buuuuttttt when I had the small stock Fmax downpipe with racing cat and 2.5" exhaust I put out 245WHP but I believe that was at 13-14PSI can't remember...
anywho my point is a lot of custom kits I've seen are nice but sometimes don't put out as much power as the predone kits its like building an exhaust or coldair intake think of how many hours of dyno time DC/AEM/... put into their exhaust/header/intakes for that extra HP
now on the other end if your a big shop with all the right tools custom kits are by far the best but you really need to know what your doing
Jason the owner of Tempestracing.com hates the manifold on this prelude it was one of his earlier manifolds hes built as with the rest of the system
Fmax I picked becuase I found it to be the best kit for the money 4400 installed with dyno tuning is what I paid but don't forget you need a new clutch!