02 sensor

[Grey5.0]

After tuning with 5 star tuning and running there e85 tune my car ran like hell so flashed back and now im getting a p2097 and p2099. So i decide to switch out the 02 sensor. For upstream I order part # dy-1442 for down stream i order part dy-1291 from rock auto. Down stream is not even remotely close to what I thought I needed entirely different plug and everything. After getting under the car I now see 4 sensors.

What do I need to replace? I ordered 1 upstream and 1 down stream. Do all 4 need to be replaced? seems a bit much any help would be great. Car has been driving like hell ( havent pushed it above 2000 rpm dont want to cause any more issues)

And yes I have spoke with 5 star and they have done a reversion and now they wont call me back

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[Grey5.0]

Would 2 of these https://www.rockauto.com/en/moreinfo.php?pk=11967373&cc=3441002&pt=5132&jsn=1508

And 2 of these work? https://www.rockauto.com/en/moreinfo.php?pk=10180504&cc=3441002&pt=5132&jsn=1517

Maybe i'm over thinking this but half the sensors I look at show a different connector ( round ) and the other half are flat? Is the 18 an inbetweener year or something? Never had this much issue/confusion with a damn sensor. After looking at all the sensors under the car they all show a flat type connector, can I run the same sensor and get a jumper/extension?

If any one could confirm or deny that these would work, i'd be very grateful!

 

[WildHorse]

Flash back to what ? Stock tune ? Gas performance tune ?

 

[Grey5.0]

Flash back to what ? Stock tune ? Gas performance tune ?

I've tried both my 89/93 perf tunes and they all have the same response. Currently on 93 perf. Very hesitate to move, turns over a few times before starting, loss of power etc etc.

 

[WildHorse]

I've tried both my 89/93 perf tunes and they all have the same response. Currently on 93 perf. Very hesitate to move, turns over a few times before starting, loss of power etc etc.

Is all the E85 out of the tank ?

 

[Grey5.0]

Is all the E85 out of the tank ?

I filled up with 93 when there was 9 miles left in the tank and have driven 3/4 a tanks worth of gas since e85 was in there. I got the cel when e85 was in the tank and still had it after my second revision. I can drive the car for about 30+ miles and then it will come on, but you can tell the power isn't there the entire time you drive. Hell when you start it up its much much quieter too.

 

[WildHorse]

Dunno what to tell you, and 5-Star won't call you back. Flash it to the stock tune and see what happens. BUt if you have a tune required CAI put the stock one back on first.

 

[Grey5.0]

Dunno what to tell you, and 5-Star won't call you back. Flash it to the stock tune and see what happens. BUt if you have a tune required CAI put the stock one back on first.

Thats the issue, I have a CAI. If I could find the right sensors I would just replace them. Looks like I have bank 2 sensor 1 ( upstream ) the other ones I got from rock auto wont work.

 

[ORRadtech]

Take your VIN to Ford. They can get you the correct part from that.
In my experience you're almost always better off paying for factory O2 sensors anyway. It would still be smart to take an example of the old sensors with you for comparison.

 

[WildHorse]

Thats the issue, I have a CAI. If I could find the right sensors I would just replace them. Looks like I have bank 2 sensor 1 ( upstream ) the other ones I got from rock auto wont work.

Here's the various Ford part #'s to cross reference ; https://www.oemford.parts/oxygen-sensors/2018-ford-mustang?

 

[Grey5.0]

5 star gave me a call today after I called them again on Monday. Honestly think they just forgot about me from last week but sh*t happens and they seem busy.

Anyways they said they think they issue is the intake. It's a jlt intake, they sent over a new revision and it's much better not 100% but it seems much better. Hoping to get another revision tomorrow. I finally found the right sensors from rock auto. It seems bank 1 sensor one is listed for manual but it "should" work for the a10. Still have these on order but if the tune fixes it I might hold off. From the ones thats I did pull they seemed to be clean but I'm not an o2 sensor expert (clearly).

Thanks to those who helped !!

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