Just taken ownership of wrx sti fuel advice needed
 

So I just bought my mates wrx sti import off him.
It is currently been ran on v power however shell is a bit out of my way and I rarely go up that way, However there is a tesco with 99 ron just rouond the corner from me. The car was mapped to run on v power and I would just like to know if I need to get it remapped to run ok on tesco's 99. Car has the below mods:

cat 1 alarm/immobiliser
sti 6 spoiler
api engine rebuild ( 6.5 k reciepts )
forged pistons
sti 7/8 crank (nitrided)
shot peened con rods
td05 20 g turbo
denso 550 injectors
motul oils all round
fmic
fpr
avcr
apexi power fc
mapped by pat herbourn to circa 380 bhp
knocklink and lambda link
hks unequal headers
decat d/pipe
afterburner exhaust ( nice and quiet)
forge recirc d/v
aircon retained
carl davey inlet manifold insulating spacers
relocated header tank
parallel fuel mod
k&n large cone filter ( lateral performance )
new lambda sensor
custom centre pod.
17" rota lightweight alloys
motul dot 5 brake fluid
goodridge braided hoses
mintex 1144 pads
kyb adjustable suspension with eibach springs
alloy rear droplinks
polyurathane bushes

tesco 99 ron will be fine IMO. my 93wrx gives better mpg with tesco 99 compared to v power.

I use either V power or Tesco 99 just depends which direction I am travelling as to which I use. You can get away with using any of the super unleaded fuels as they are 97 Ron just don't push it to the absolute limit.