so not long got a fresh import v4 type-r

i know the ecu is not mappable on these so whats the best fuel to use in the mean time? v-power is what i have always used on my other uk sti's, and will not be replacing the ecu until next year with possibly simtek

 

v-power most say but tesco 99 ron dose the same job

 

oh some people have got better power on tesco 99 ron

 

I would also put a splash of octane booster in as well just to be on the safe side .

 

i have always used V-power, looking to get the esl next year

 

how much octane booster would be enough to do?

 

octant boost is for when you cant get 99ron and can only fined 95ron good to keep some in the car just in case but no need to add to and 99ron fuels

 

You should be fine running it on V Power or Tesco's Momentum, I was in the same boat when I first had mine

 

For safety I would put a bottle of millers octane booster in with every tank, I did this with my sti 3 till I moved on to an apexi power fc