Jb4 tuner

[Underdog]

Anyone have the jb4 tuner installed? I have a 2019 Stinger GT2 RWD. I’ve also installed a Borla exhaust and the Ultimate Performance down pipe/mid pipe. i run on Map 3 (91 octane) and map 4 (93 octane). This will be my 3rd misfire when accelerating. I now have tuner turned off. I’ve been told there is too much air being drawn in and car computer sends extra fuel which causes a misfire. Does my car need to be dyno tuned or is it something else? Please help.
Thank you

 

[BadTrainDriver]

What spark plugs are you using? What do your logs look like? BMS does not recommend going past Map 1 with 91 octane for a reason. Who told you too much air is being drawn in? Fuel wires? EWG wires?

 

[Underdog]

I just ordered EWG wires. Did not know I needed them. Maybe this will correct problem. I use Denso high performance plugs gapped at .022. My bad. Map1 for 91 and map 2 for 93

 

[Kia Stinger]

Moving this discussion to the JB4 forum.

 

[Terry@BMS]

Post up a JB4 log if you need tuning advice.

 

[boosted1g]

Are you injecting other fuel as well?
Otherwise you are not supposed to use those maps with that grade of gas.
Map 1 is for 91 octane, and Map 2 is for 93
Map 3 needs water/meth injection or running an ethanol mix

So if you are using Map 3 on just 91 octane then yeah, the jb4 is doing everything it can to keep you from damaging the engine.