hey, if you want a good tune on that car hit me up. I am in Wisconsin and have a v8 of my own. I do opensource tuning and am attempting to stretch my customer zone to something a bit larger than NE wisconsin.
if your front axle seals are leaking take the axle off the car by taking the nut off. popping the lower ball joint off and then pulling the axle out of the transmission. then put a mark on the circle cover with all the teeth and on the housing. take the locking key off that is held on by the oen bolt then spin the cover off counterclockwise. count the turns out just in case. pull the seal out. get one from the dealter and tap it back in palce with a socket. spin the cover back in to its original location. leaky problem solved!
as far as 93 octane the engine tunes great in my opinion. tuned my ej207 and a local guys ej207 and they make great power on 93. e85 you can turn the timing and boost up a bit with the stock turbo but a larger turbo would really help with the top end.
on a side note i got a few extra avcs harness's made up for sale if anyone needs one for there swap hit me up! lots of ppl on the forums can vouch for the harness's quality and function!