but why not tune so the car is running optimum from the start, im not talking WOT tuning, im talking VE, IFR, Timing, so the car has room to make proper stoich adjustments
IDK...money, time....could be lots of reasons. For the little gain involved and the ability to switch back to regular fuel without making any other changes, I don't see the benefit for a daily driven car.
2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
2005 F350 6.0 - studded, deleted, tuned
2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold