FUEL HELP.

[frefer82]

Hi every one.

Im buying some race fuel but i have some question , mi car is a 135i N55 with all the bolds on we have
, and want to race it with elf racing fuel but have 6 types of fuels to chose can some One tell me wish one its the best for my car, the fuels are this ones:

ELF AVSP 11VS
ELF AVSP 15
ELF BFK 07
ELF ELF E85
ELF PERFO 100
ELF PERFO 105

[fullboost]

Elf perfo 105 is the highest octane of the group so it would be best. But unless you're going to tune for it it will be a waste of money.

[b1aze]

What is your tuning option? JB4/ISO had "auto tuning" options, but without a specific map/tune for it, it's a little overkill.

[frefer82]

hi there an thanks.
I have on the car JB4 stage 2 and today i will upgrade to iso so my plan is to run it in map 7 or 5 i think the 7 wold do the job.

[PurpleHeart135]

Wouldn't it still take a bit to adjust to the change in octane?

[frefer82]

So what I have to do ????? I thoug is was fill the tank change to map 7 and race ?