when driving around today in fd2 i felt a vtec change over in the higher RPM, im sure it was around 6000rpm or just a bit below, and it was very noticeable.
but unfortunately i could only get it to happen 2 times, then it didn't happen again. i take it this is the i- in i-vtec controlling a range of factors before it implements it.
i wonder if it woudl be possible to program the ecu, to ignore all fuel saving features to make a type of vtec controller to say make this change kick in at 5000rpm, with a full open vtec power from 5-6.8k rpm
it wont make more power obviously but the power curve would kick in earlier so should improve acceleration quite a bit.