Enging misfire/hesitation at 3500 RPM

agustincuenca · 12-30-2018, 06:27 PM

ok, just bought 2 new VANOS OEM from ECS (slightly cheaper than FCP), will be installing them soon and keep you posted. If this doesn't fix the issue, I fear the wastegates are acting up, although not rattling at all.

agustincuenca · 01-05-2019, 07:41 PM

changed VANOS, same issue....now to the indy shop, I give up

335e92tx · 01-05-2019, 08:42 PM

all adapts reset?

rediahad · 01-07-2019, 05:21 PM

I had this same problem, changed everything with better stuff, eldor coils, ngk one step colder plugs, got a custom dyno tune, nothing fixed it so then i started working on the fuel system. LPFP stage 2 bucketless, same issue. Finally said forget it and paid the 1500 for the index 12 injectors, installed those programmed them and to my surprise and wonder the problem is gone.

agustincuenca · 01-07-2019, 07:44 PM

Quote:

Originally Posted by 335e92tx

all adapts reset?

you can only do those with MHD right? I have cobb access port, not sure I can do that with it.

agustincuenca · 01-07-2019, 07:47 PM

Quote:

Originally Posted by rediahad

I had this same problem, changed everything with better stuff, eldor coils, ngk one step colder plugs, got a custom dyno tune, nothing fixed it so then i started working on the fuel system. LPFP stage 2 bucketless, same issue. Finally said forget it and paid the 1500 for the index 12 injectors, installed those programmed them and to my surprise and wonder the problem is gone.

thenks for the input. You had the same issue that between 3,000 and 4,500 rpms the engines does not pull hard and over 4,500 it does?
I had new injectors installed and programmed January 2018.

rediahad · 01-07-2019, 10:38 PM

Quote:

Originally Posted by agustincuenca

thenks for the input. You had the same issue that between 3,000 and 4,500 rpms the engines does not pull hard and over 4,500 it does?
I had new injectors installed and programmed January 2018.

Mine was at all rpms it would studder if i was at cruisjng speed then pressed acceleration

335e92tx · 01-08-2019, 08:18 PM

Quote:

Originally Posted by agustincuenca

you can only do those with MHD right? I have cobb access port, not sure I can do that with it.

yeah, or a BavTech cable.

01-10-2019, 02:18 PM

Quote:

Originally Posted by agustincuenca

you can only do those with MHD right? I have cobb access port, not sure I can do that with it.

Download INPA onto a laptop.

12-30-2018, 06:27 PM	#67
agustincuenca First Lieutenant 155 Rep 344 Posts Drives: 2008 E90 335i; 2016 F80 M3 Join Date: Sep 2014 Location: S Louis iTrader: (0) Garage List 2016 BMW M3 [0.00] 2008 BMW 335i [0.00]	ok, just bought 2 new VANOS OEM from ECS (slightly cheaper than FCP), will be installing them soon and keep you posted. If this doesn't fix the issue, I fear the wastegates are acting up, although not rattling at all.
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01-05-2019, 07:41 PM	#68
agustincuenca First Lieutenant 155 Rep 344 Posts Drives: 2008 E90 335i; 2016 F80 M3 Join Date: Sep 2014 Location: S Louis iTrader: (0) Garage List 2016 BMW M3 [0.00] 2008 BMW 335i [0.00]	changed VANOS, same issue....now to the indy shop, I give up
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01-05-2019, 08:42 PM	#69
335e92tx ahat 1082 Rep 2,594 Posts Drives: Was '07-335e92 - Now '13-335IS Join Date: Mar 2008 Location: Texas iTrader: (6)	all adapts reset? __________________ '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- Grey interior (1 of 24 in LMB with any trans- 1 of 14 with DCT)-MODS -MFactory LSD/MHD-BQ custom Tune/ATM-IC/AFE Momentum GT Intake/Konis/Mfront&HeimJoint Rear rods&arms/Brembos. https://photos.app.goo.gl/Lo6aHZRo7XqtPkhL8
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01-07-2019, 05:21 PM	#70
rediahad Banned 18 Rep 115 Posts Drives: E71, E93, E92 Join Date: Apr 2018 Location: Sacramento iTrader: (1)	I had this same problem, changed everything with better stuff, eldor coils, ngk one step colder plugs, got a custom dyno tune, nothing fixed it so then i started working on the fuel system. LPFP stage 2 bucketless, same issue. Finally said forget it and paid the 1500 for the index 12 injectors, installed those programmed them and to my surprise and wonder the problem is gone.
	Appreciate 1 Quote