May 29, 2020 · 91 octane is the best I can get around here but pure gas is available at a premium price. Which is better for a boosted application?

Sep 22, 2019 · Hey guys, does JUST a 91 octane tune make as big of a difference on the Gen3 coyote as it does on the older ones? It made my 2012 feel like a completely different car. I plan on keeping the stock intake and exhaust, the only thing I would do is the tune, and I don't wanna run on corn because...

Mar 30, 2011 · Was on empty last night so I went to Shell to fill up and they ran out of 87 Octane so I was able to fill up 91 for the price of 87. I'm just wondering if anyone in the jeep family is fueling 89, 91 on purpose and what (if any) benefits come with fueling it.

Jun 20, 2014 · In the Key Product Specifications (page 57) it says fuel requirements 87(min)/91+(rec). If my focus for purchasing the mustang is styling and fuel economy with the Ecoboost engine and not so much performance, I wonder what would be most effective. Ford, please don't give me choices - just tell...

May 11, 2018 · A higher octane fuel (93 vs 87 octane for example) will produce different readings on the sensors and controls monitoring the engine. In other words, the computer will give the engine more total timing advance on higher octane fuel - thus making more power.

Jul 8, 2015 · I would like to know this as well. Is a reliable and safe 700 RWHP possible on 91 octane?

Jul 20, 2023 · I use 93 Octane gas that has 15% Ethanol. I recently saw at a pump 91 Octane gas with no Ethanol and 93 Octane gas with 15% Ethanol, which is better for my Hellcat the 91 without or the 93 with?

Dec 28, 2021 · Does anyone in Anchorage know where to find 91 octane? I did a short trip around the Dimond area and checked Costco, Holiday, Chevron, Fred Meyer, Carrs Safeway, Tesoro, Shell, and Essential 1. None of them had 91 octane.

Nov 5, 2018 · Looking for advice. I’m about to void that warranty on the hellcat. Was wondering what everyone’s opinions were? I’m thinking to do a 2.85 pulley and 91 octane tune with all nessary parts or a 2.85 with an E85 tune. What would the power difference be? Anyone have either of these setups and what...

Jan 4, 2018 · Well, I finally decided to go to the dark side and put a tune on my car, albeit a conservative 91 octane tune. I knew it would bring power down some from a 93 but I'd rather be on the safe side of things. I decided to go with VMP since they already sell my CAI kitted with a tune, and the chances...