Wow. I have my OD come on at 53 MPH because most higher speed limits here are 45 and I don't feel like clicking the OD off everytime a jackhole gets in front of me. Anyways, with all my mods I went from a best ever 21 1/2 MPG stock to 23 1/2 MPG in it's current state untill I had the OD raised. Now I can get around 18 MPG, but average 8-12 MPG. No, I'm not kidding. I figure WTH? I have a beater for work, this is a toy/family car, might as well have some fun with it.
So before I rambled off, I meant to say that it is indeed VERY possible to actually increase your MPG's even if you almost double your HP.. Tell your tuner that fuel mileage is deffinately a concern and they can work with you. You will obviously waste gas cruizing around in 3rd so depending on your average around town speed limits, you should just tell him exactly when you would like OD to kick in and just manually click it off when you feel like nailing the go pedal.
I have dealt with Lidio, not exactly a speed demon on call backs, and can come off as cocky at times, but a great guy and knows his stuff nonetheless and has bent over backwards for good friends of mine. D.R. also a great guy and is always extremely helpful and always answers his phone, even on a Sunday night!, but is the absolute worst I have dealt with out of any vender with (and I have built many cars) making good on delivery at even a somewhat normal timeframe, or making good on promises of freebies after admitting of mistakes. BUT in all fairness, I have only given him one shot at making good, everybody makes mistakes! Just sucks it was on my first purchase, but I will give him another chance, when money starts flowing again. Thats MY opinions, and yes I do judge harsh, but I am the one putting MY cash in THEIR pockets. I have no problem critizing, just like a restaurant, I feel it neccessary to share with members my experiences both good and bad.