75 v4 sti fuel rating
 

what fuel is the 75ecu mapped for standard? if 100 ron is 99 tesco ok?

with low boost can 95 or 97 be ok?

Does it not tell you on the fuel filler flap i always use v power if not momentum both are 99ron wouldnt put 95ron in fcuk that

Ive just swapped a uk turbo engine for an engine,maf and ecu from a v4 sti type r.

99 should be ok, best to get it checked though. I ran my V6 STi for 8 months on 99 without a map and she was fine (absolutely no mods).