hi beefy you say praising my manifolds , they are not mine they are ians inlets . all tests was the same boost , no ignition change or fuel change only making sure the car was safe to run.

i think that ian has provern that its been the best inlet for the last 6 years or so as my engine made 522bhp back in 2006 , we are only just seeing these figures improved upon now thats 5 years worth of development work to get another 50 bhp .
i didnt do the tests so didnt decide on what inlets to choose from but ian also the first to use the rover inlet and says that 350bhp is the tops , as he tested it years ago with the flow bench that he personally brought for this very purpose.
i know for a fact the the optimal angle for the zetec head 12.5 to 15 degrees and that jenvey are the only company that have designed the inlet plate with that angle with tapered runners , your never , ever going to get that flow using a rover inlet bottom section that other people use .
are the others a improvement over standard , probably yes but i wont be as good as the area six one, jamsport do cvh and to get 500 bhp from one is near impossible as the engine wouldnt last long enough.
mk motorsports looks vey good but its £250 more than ians so theres no logic in buying one and crazycages are modded rover ones so have a limit.

cheers paul