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Originally Posted by akgambino
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Originally Posted by Rebound
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Originally Posted by akgambino
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Originally Posted by Rebound
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Originally Posted by akgambino
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Originally Posted by Rebound
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Originally Posted by akgambino
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Originally Posted by Rebound
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Originally Posted by 13blk335ix
no codes thrown. I have bm3 stage 1 and it's been happening ever since I installed it
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So... you'd want to disconnect the BM3 to see if the misfires stop, right? I don't think you need to remove it altogether, just unplug its connections to see if the problem goes away. |
Unplug bootmod3. 🤦*♂️ |
Lo and behold, unplugging the mod made the problem go away. So there.
So why would a more aggressive tune lead to misfires? Perhaps the octane is too low, or maybe older plugs will help?
Or maybe the BM3 wasn't connected tightly, and getting a bad reading? Or it could be defective. |
Man are u slow or something? Bootmod3 is a flash tune it doesn't get "plugged in" or "unplugged" or have a "loose connection". Wow. |
Ok, it's a software tune. ($500 for a software tune... damn!) Still, disabling it solves the misfire. |
Alls I'm saying is I wouldn't take advice on causes of misfiring on a flash tuned car from someone who thought bootmod3 was something you plug-in and suggested to unplug it or anyone who seemed to think $500 for a flash tune is "damn".
Buddy who has made 20 different posts about his misfiring n55 should prepare himself for the news that it is actually his clutch slipping and the dme detecting misfire based on the slippage. And people in general should get over trying to solve everybodies problems they have on their cars by telling them to change spark plus or adjust spark plug gap and then when they waste their time and money doing that they come back and say to get new coil packs and when that fails.... unplug bootmod3. |
It's just an engine. Fuel, air and spark. Toyota, BMW, whatever.
He said that disabling his Bootmod solves the problem, so it doesn't seem like a slipping clutch to me, it seems that the misfire happens under the higher stress conditions when the tune is enabled... fuel flow increases, heat increases, cylinder pressure increases. These all point to an ignition-related condition, but of course I can't say for certain.
If there's 200 left on the warranty, I'd try to reproduce without the Bootmod and report it, that way, the repair still needs to be made even if mileage exceeds the warranty maximum. |
I can say for certain that you should go do some more research!
Clutch slips when running tune due to approx 100wtq more than what the car pushes through the clutch stock. Dme reads the slippage as misfire and pulls load/timing. Stock clutch not designed for so much torque. |
I just told him about the coils because that's the next thing after plugs to cause misfires, wasn't aware of how much more power he was running. Glad someone knew what it was and could get his problem solved!
I just got my car back today, they couldn't figure shit out. They logged the engine and checked injectors but all they told me was that they couldn't fix it and it's most likely a coil misfire. Only thing is I just changed the coils specifically because of the misfiring so now I'm just clueless. Engine seems to misfire more when cold.