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Depends on your part of the country. I'm in Ohio and there are some small towns where premium only goes up to 91 or 92 octane. I don't pay attention to dynos, but my gearhead ao tune took me from a 13.76 best totally stock with full tank of gas to a 12.53 best on 93 with a totally full tank of...

You definitely don't want to run 87 on a 93 tune. I would assume the auto octane tune from zfg would be within a tenth or two the dedicated 93 race tune. I run an auto octane tune from gearhead, only done 2 full quarter mile pulls since the weather turned ugly shortly after I got it, but it ran...

It's amazing how far just a tiny little bit of effort goes!

Hope by the time you got home there was less than a pound of chicken nuggets in the back!

I had a sho for 7 years and recently switched to an ST. Sho was gearhead tuned and went down the track 380 ish times. I went with gearhead on the ST also, went from 13.76 stock to 12.53 just a 93 tune. Loved the SHO but I do not miss it one bit. The ST is everything it was and more. Good luck...

I tried quite a 5 or 6 runs stock, best I could do was 13.76 with a full tank of gas. That was with pretty good air too, couple hundred DA.

Thanks, I do not have a set of these. I'll pick some up and give them a try and report back if they help.

Any Ohio ST's going to Hangover Nationals at dragway 42 on January 1st?

I have flexible head ratchets and flexible head wrenches, but couldn't get close with either. It's just such a tight space with zero visibility....plus it's so far back in engine I literally had to sit on front of engine bay to even attempt getting a tool on it, but the only angle I could...

OMG that is exactly what I need. I did not even think to look on that side, I assumed the other end of fuel line was down below on passenger's side. Thank you soooooo much! I do have the disconnect tool and the extra fuel line already. The sensor I have was on my previous ecoboost. I have the...

I already have the sensor and fuel line to plug in from other end of reader to the hpfp. My issue is getting to the fuel line to disconnect it. Did you connect yours at the side of the hpfp or is there another end of the fuel line that is easier to access. I just can't the bracket off that...

All I know for sure is that if I ever get that bolt out, it's not going back on.

How in the holy heck do you get that 10mm off the bracket above the hpfp? I watched the only video I could find on it, but the video does not show exactly how to access it or what exact tool was used. I've got a pretty extensive set of wrenches, sockets and various extensions but I couldn't get...

Improved a little bit. Dragy 1/4 mile video

1. I agree that would be nice, I have not found a way to do that but does not mean it can't be done. 2. I believe so, because mine does that automatically. Go thru the vehicle settings and you should find something pertaining to the seats and steering wheel. 3. There is a recall for that. I...

I would use the E85 from that station, but no way I would use any of the other ones. The 93 octane is already 30% ethanol. You want to use 93 octane that is only 10% ethanol so you can mix more e85 in and end up at a higher overall octane.

I just bought mine with 12K miles last weekend. I too was worried about the 1 bolt issue and lots of other issues I'd seen over the last several months. I specifically looked for a vehicle with a "C" VIN, but still have noticed a couple issues since I bought it. The chrome on the driver side...

I went with gearhead since I already had an sct device and used them on previous vehicle. Stock the best I could manage was a 13.76 1/4 mile on dragy, after tune the very first run I managed a 12.65. Not sure how many hp that works out to but it was a noticeable difference. I think the majority...

Gearhead auto octane base tune, just loaded it up tonight. I was impressed with the result, best I could manage on stock tune was a 13.76. Completely stock with 3/4 tank of gas, didn't mess with tire pressure at all. Definitely not a slow pig anymore.

Thanks! Ya I put a few mods into the sho, it was a consistent 12.0 car for the last three years. Hoping to get the ST either close to that or a little bit quicker.