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2021 Q50 RedSport, ARK Cat-Back. HKS BOV, AMS LDP, Mishimoto Catch Can
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711 Posts
We have been getting a lot of customers in our shop recently that have had bad gas issues, Specifically from Sunoco...
 

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2018 Q50rs Mishimoto HE, JB4, AMS Intakes, Hall Built 3” LDPs
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14 Posts
Discussion Starter · #22 ·
So from what I'm gathering, it appears that the Arco station I've been going to for 91 must be off on their octane ratings. I have some race 100 unleaded I'll have to try.
 

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St. Louis, MO
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948 Posts
Would be great if it is just the gas...sucks for you guys stuck with 91...limits what you can get out of the car you paid for! Anyway, let us know how it goes...really hope you can find a reliable solution so you can enjoy your car!
 

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2016 Infiniti Q50 Premium AWD (w/Bose & Nav)
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635 Posts
I mean this isn't my wheelhouse, but is it not worth considering the fuel quality could have changed? I would personally ride out my tank and try another known good station to see if anything changes before I go digging into an issue no-one else has seen here before.

Either way, shoot BT an email in case, you never know how long those support queries can take.
 
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