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Hello, I finally tuned my ST - Currently running ZFG 91 on 93 and fairly impressed. I haven't got the chance to put in a E30 mix yet to see if there is a seat of the pants gain. I went with 91 tune because 91 is a little easier to find than 93 and the stations closet to home are ONLY 87. Im...

How bad is the install on the newer fenfab intake? I've done 2 intakes on super duty's in the past and they were no big deal... Considering doing this CAI but don't want to bite off more than I can chew. Thanks!

E85 isn't everywhere around here. I believe it's E30 but the 93/E30 AUTO OCTANE tune appears to gain 50 ish HP where as the straight NON AO E50 is 100.

What I'm asking is if I 90% of the time run the Auto Octane tune but I want to be able to switch to the E50 specific tune occasionally how easy is it to switch from the AO tune to the E50 tune? 60 seconds in the gas station parking lot after filling up with mixed fuel? Easy to do?

Yes

So if I've been running the E50 and wife is going to take over and fill up in a day or two can I just switch back to AO and it will run fine?

What's the consensus on this exhaust? I'm thinking about doing something but don't want the car to be very loud - a little louder or loud under WOT is fine but this is my wife's car and she won't be happy if it's loud in the cab. I think this exhaust sounds good from sound clips and apparently...

I just purchased the ZFG AO tune - if I want to buy the ZFG E50 tune as well is it easy to switch between the tunes? Can it be done in just a few minutes? There isn't a lot of E85 around me and the only times I would probably run a E50 are when I want to impress a buddy or have some fun. What...

Gearhead seems to get pretty good reviews and looks like it may be a cheaper option for their AO + E50 tune. I'm guessing easier install too, I'm a novice and may end up going this route unless someone can talk me out of it.

Unfortunately I can't find an answer, how quick are the tunes to install and uninstall? I would go with a 93 if it is quick to install and uninstall but I don't want to be forced to run with 91 or 93 fuel. Also can anyone comment on the shifting of ZFG tunes? Is it comfortable if just daily...

Is a CAI worth it if doing intercooler and ZFG tune? Wanting to stick to auto octane as most of the time wife just drives to work and couldn't care less so don't wanna be stuck buying 91 or 93. Really like the looks of the new S&B CAI. Would love to break 450 HP. Better yet 500 but doesn't sound...

Adding likely a CVF intercooler (possibly Steeda or Whipple) and interested in the DMS ZFG tunes. How much more power can I expect on an auto octane tune? Texted ZFG and no response. Wanting to get this all ordered and coming soon. I would appreciate any input. Thanks.

Thanks for the replies. I will probably go with the Whipple or Steeda. Talking with a body shop here soon. Texted ZFG waiting on a response.

Also want the best bang for buck intercooler. Surely the body shop will just let me pay the difference and not give me a hard time for not going back to OEM?

Not worried about warranty. Just want the best shifting highest performance auto octane tune.

Thankfully she is fine. Air bag did not deploy. She was going about 50 and it really did a number on her car. I hope repairs turn out good and undetectable. I won't be happy unless everything is perfect. I will absolutely use this as a reason to upgrade though. Wish it wouldn't have happened as...

Wife hit a deer on the way to work this AM. Intercooler, radiator, and whole front end is trashed. Thankfully my wife is fine. Now is the time to do an intercooler - can't imagine OEM being super cheap so the cost will be already partially covered in my opinion. What is the best option and...

Okay so is the ZFG auto octane worth it over the ford tune?

Ya think? Assuming the same driving habits are we looking at a increase or decrease that is my question.

For those of you with the ZFG Auto Octane have you noticed a drop in MPG? Really considering the tune but the ST is my wife's daily driver. Don't want weird shifting or worse MPG than stock. I can't imagine it being much different, as all the diesel trucks I have tuned only get equal or better...