For those who has ECU maps that require racing fuel, where do you get the fuel?

Would it work if one add octane booster to the pump gas? See the article below.

http://www.hotrod.com/techarticles/72498/

 

If you can't find 100 at the pump locally, you can order racing fuel online at a number of locations (VP 109 is popular - 105 motor octane, unleaded). Or, you can use Toluene to raise octane, but cannot mix more than 30% Toluene, and even at that level I wouldn't recommend it (in other words, I don't recommend using toluene to achieve 100 octane, especially if you are running a file that requires it).

This might help:
Sunoco distributor map

 

I use either VP Racing 103 unleaded or Elf LMS 103.

 

I purchase my gas from one of two Alliance stations in the San Fernando Valley that sell 101.

Octane boosters will not get 91 or 93 octane anywhere near 100. Here are another two articles regarding, inter alia, octane boosters:
http://members.rennlist.com/951_race...omparison.html
http://www.idavette.net/hib/fuel/

Craig