I have seen upwards of 34 and change, and as low as 18 when i first started working on my exhaust because I was too busy playing with it to get a sound that I liked. lol The only draw back is that here in the mountains I can only get up to 91 octane without going to the race track and getting avgas.

'04 Ltd Auto
K&N filters
Cutsom Exhaust
2 10" MTX 5500's