iv just bought an apexi pfc from japan and have been told it comes with an apexi map to suit 99 octane,who is the best at mapping these or is this apexi base map ok.mine is a v4 type r.also i live in n.ireland,heres the mods iv made any ideas on approx power figures
255 walbro and regulator
fmic
hks equal length manifold and up pipe
3" turbo back system
air filter
apexi pfc
oil cooler

 

it would really need to be mapped, not to sure on the power though