Just wanted to ask the resident experts...

With regards to a b16A2 setup using stock conrods + EK9/SPOON/OTHER high compression pistons and rings and stock cams intending to make power up to 9000rpm

1. Will stock ECU (obd2) + VAFC be sufficient (not optimal i know, but SUFFICIENT)

2. If above is insufficient... would it make sense to put one of those "mugen Ecus" in

3. Does the fuel system (ie: pump, injectors, etc) need upgrading at this point

4. Does stock ignition system (plugs, leads, dizzy, coils, etc) need changing

Feel free to comment as i'm still researching and i havent bought any parts as yet. Do i really need cams to make power up to 9000rpm or not necessary?

ps: on my budget...the max i would get are EK9 Cams + springs (no retainers)

cheers