I've run 93 octane in my 2016 GT almost exclusively. The owners manual says to run that for best performance but also says that 87 octane is perfectly ok. After a year or two of ownership, I did run about a half dozen tanks of regular just to see if I could tell the difference. Honestly, I couldn't but I'm also not one to hotrod around that much so for me, just driving normally, the car seemed fine. I never heard any pinging and my fuel economy stayed right in line. With gas prices being what they are, I went back to premium. At that point, the car seemed to run a little smoother but I'm not sure that wasn't just phycological. Either way, I couldn't tell any difference in outright performance.
I agree with this post, I prefer to buy new cars if I plan to keep them for a long time but if you can swing a 2018 auto GT, you should have close to one year warranty which should give you some peace Of mind
Simple fix. Get the active exhaust then you can put it on quiet when you are tired of it. I drove my GT 1,300 miles when I first got it in one trip and I just ran it in normal and there isn’t any drone.
News to me! I've got a box stock 2016 GT, exhaust wise, and I've had it on a couple of multi-day road trips. Cruising down the freeway 70-75 or so, I'm not aware of the exhaust sound at all. Step down on it while passing someone and it sings quite nicely but is more than subdued otherwise.
Mine is 2017 no Active exhaust option.
Sound tube is not deleted on mine yet which mean you are hearing the engine in the cabin. I'm very noise sensitive which is also contributing to this.
Well that it unfortunate. They do make aftermarket active exhaust but I don’t know how much it is or how it’s set up.
Understood. Sound tube is fully intact on mine too but my hearing obviously isn't as good as yours. I have, from time to time, thought I might want mine a little louder and have considered doing a resonator delete (H pipe) with the stock mufflers but I've gotten conflicting opinions about how much louder it will be. I wouldn't mind mine being a "little" louder but I have really good relations with my neighbors and I don't want to jeopardize that. If I can ever connect up with someone who has this exact modification and I can hear what it really sounds like, I might do it but as it is, I'll just leave it stock. I hope you can find a resolution to your issues.
I just got my Steeda H pipe instead two days ago on my factory active exhaust. Everyone said it was “a tad” louder. No this shit is way louder. On track mode now it’s loud as hell. Obviously not straight pipe loud but it’s definitely loud. I have to start in quiet mode now because cold starts with an H pipe will definitely piss off the neighbors. I use to run it in track mode all the time now I use sport mode. Sport is basically what track use to be and track is well.. loud. I was say it’s borderline obnoxious in track, but hey to each their own.
Thanks for the reply. My car is a 2016 GT so obviously I don't have the active exhaust. The Steeda H pipe would be my selection as well. I've gotten a lot of feedback like yours but I've also had some say that they thought it was pretty loud, or louder than they expected it to be. It's obviously a subjective perception. I'd still like to hear one in person before I spend the money. I definitely don't want to get the thing installed and "then" figure out I don't like it. You wouldn't happen to live in the Houston area would you? ;-)
