FBO N54 and MHD. HELP

dilloncorrallo · 08-29-2019, 11:39 PM

Hello all. I have recently purchased MHD and completed my first flash. My car is currently FBO 6 speed PRE LCI e90 n54 . I selected Stage2+ at 93 oct. Car ran perfect before flash. Tuned by previous owner at urosport. Upon flashing my car with stage2+ 93 oct i edited the settings so the burbles would be agressive and applying the wastegate rattle fix (which worked perfectly) and after driving for a little while to get the engine warm, I try a tiny pull. I am in 2nd gear around 2300 rpm and i slightly press the throttle and I notice that it is way more sensitive than before. After slowly applying more throttle, I notice my car is pulling WAY harder than before. But around 2/3 throttle, its like the tires feel as if they loose traction and then the service engine soon light pops up and the car starts running weird. After turning the car off and back on its like it was back to normal but every time I try to do a pull, it feels as if it pulls hard as fuck compared to before, then the light pops on again and feels like its running like shit.
Again, before my car ran perfect. Pulled hard and beat most 5.0's and ss's.

After flashing MHD for the first time, everytime i try to do a pull it gets stuck at the rpm that its at, like its bogging.

Any help or past thread would be greatly appreciated.

Plan on buying the monitor option tomorrow so I can do some logs and see if I can find anything.

hellokitty · 08-29-2019, 11:46 PM

probably misfiring and hitting limp mode. time to look at coils or plugs :|

IllSic_Design · 08-30-2019, 12:19 AM

If your car goes into Limp mode it will have codes stored in the DME(computer), even if the dash light doesn't come on/stay on. Use MHD to scan the codes and see what codes your car shows, most likely misfires as stated above. If it is misfires, start with the plugs, and then move to coils.

Jerain · 08-30-2019, 02:24 AM

Quote:

Originally Posted by dilloncorrallo

Plan on buying the monitor option tomorrow so I can do some logs and see if I can find anything.

this

type-dRew · 08-30-2019, 08:35 AM

We need logs or codes, useless with them.

But yeah, sounds like coils and plugs.

08-29-2019, 11:39 PM	#1
dilloncorrallo New Member 0 Rep 17 Posts Drives: e90 n54 MT Join Date: Oct 2018 Location: Texas iTrader: (0) Garage List 2007 BMW 335i [0.00]	FBO N54 and MHD. HELP Hello all. I have recently purchased MHD and completed my first flash. My car is currently FBO 6 speed PRE LCI e90 n54 . I selected Stage2+ at 93 oct. Car ran perfect before flash. Tuned by previous owner at urosport. Upon flashing my car with stage2+ 93 oct i edited the settings so the burbles would be agressive and applying the wastegate rattle fix (which worked perfectly) and after driving for a little while to get the engine warm, I try a tiny pull. I am in 2nd gear around 2300 rpm and i slightly press the throttle and I notice that it is way more sensitive than before. After slowly applying more throttle, I notice my car is pulling WAY harder than before. But around 2/3 throttle, its like the tires feel as if they loose traction and then the service engine soon light pops up and the car starts running weird. After turning the car off and back on its like it was back to normal but every time I try to do a pull, it feels as if it pulls hard as fuck compared to before, then the light pops on again and feels like its running like shit. Again, before my car ran perfect. Pulled hard and beat most 5.0's and ss's. After flashing MHD for the first time, everytime i try to do a pull it gets stuck at the rpm that its at, like its bogging. Any help or past thread would be greatly appreciated. Plan on buying the monitor option tomorrow so I can do some logs and see if I can find anything.
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08-29-2019, 11:46 PM	#2
hellokitty Brigadier General 2946 Rep 3,734 Posts Drives: '17 M3 ZCP DCT Join Date: Jul 2010 Location: Southern California iTrader: (2)	probably misfiring and hitting limp mode. time to look at coils or plugs :\| __________________ 2017 F80 M3 ZCP / AA GESI DPs / Akrapovic Evo / BBS FI-R 19" / Bend Calibration ECUTEK Flex Fuel \| Bilstein B16 DDC + CS EDC / BMC Filters / BMS OCC / CSF HE / ESS CP / Nitto NT555R2 / PD Crank Hub / SPL Suspension / Uniden R7 / Wagner Top Mount IC 2021 Mini GP3 / BMC Filters / BM3 / Cary Jordan E30 / Wagner IC / Remus Race
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08-30-2019, 12:19 AM	#3
IllSic_Design Colonel 2125 Rep 2,759 Posts Drives: 12 E92 328i Join Date: Jun 2016 Location: Northern California iTrader: (1)	If your car goes into Limp mode it will have codes stored in the DME(computer), even if the dash light doesn't come on/stay on. Use MHD to scan the codes and see what codes your car shows, most likely misfires as stated above. If it is misfires, start with the plugs, and then move to coils.
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08-30-2019, 08:35 AM	#5
type-dRew Major 642 Rep 1,245 Posts Drives: 2009 335i xDrive Join Date: Feb 2019 Location: Newport MI iTrader: (0)	We need logs or codes, useless with them. But yeah, sounds like coils and plugs. __________________ 2009 335i xDrive AT / 177k+ miles PSP 750ic / Fuel-It! Stage 1 / BMS CP / Sutphin Tuning / RFP E50 11.61 @ 117.5 New setup; Covid 19Ts on RFP 93 + ARM inlets, dp, VTT cp and PSP outlets
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