Originally Posted by saintjab
You can use it, but you won't get all the benefits if you don't have some sort of timing and fuel management. Will it hurt anything, no. Will it help, a little. Will help fight detonation at slightly higher boost.
Leaded gas is only really bad if you have a cat, or if you're worried about 02 sensor life.
Good luck!
agreed....
i felt slightly sharper throttle response, but nothing earth-shattering (was it psychosomatic?? i dunno!). if (when) i get remapped, (and when ecutek supports the 04/05 map switcher) a 100 octane map would be nice to have for use. until then, the gains are minimal and arent nearly worth the price if you're not specifically tuned for it.....
my station has 100 oct and 110 octane, but the 110 is leaded (agree w/ above that it'll ruin cats and OČ sensors, but how soon after i dont know). i have also heard the 110 has a dye in it that public officials can test for in your tank with a insertion device of sorts....