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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Installed Rob Beck turbos - misfiring (with Vishnu)



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      11-13-2012, 04:03 PM   #89
enrita
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But I set Start boost setting to 40%, which means 14PSI. I don't know why boost is higher. Should I set Overbost limit to lower PSI (I left fefault setting - 17 PSI)?
I know how to check my boost, thanks
A strange thing is my car used to autotune to 16+ PSI with stock turbos and to 18+ PSI with RB turbos with the latest autotune maps...

I read many bad things about E85 and 335i ~1.5 years ago (bad for our engines, fuel lines, fuel pumps, etc.). That is why I don't really want to go with E85. Plus, I should do many modifications, right?

Thanks for your help.
the new maps are not like before , 40% does not mean 14 psi. Set 30% boost and 16 max boost , IC 100% and see how the car goes.
Also read up on E85 here on the forum, many new infos, dynoes etc. maybe you could just get the flexfuel sensor for piece of mind when mixing it. up to E40 with no dme flash or lpfp upgrade you should be fine and able to run more boost and timings making the car shine. now you are not using the rbs, without the octane is a waste of money.
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      11-13-2012, 04:25 PM   #90
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Thanks, will do some reading. The problem is info here on forum is scattered...
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      11-13-2012, 04:55 PM   #91
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So is your misfire still happening?

I'm having a issue with a misfire on cyl6 that will not move even after replacing all hardware, plugs, coils, injectors, O2's, compression test, reset adaptations, replaced cam sensors, walnutshell blasting, checked rectaring, checked DME, running out of options and getting very frustrated. This is making my turbo upgrade a very expensive and unpleasant experience to say the least. Hopefully Vishnu/FFtec can come through for me soon, they have a good crew over there.
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      11-13-2012, 04:57 PM   #92
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So is your misfire still happening?

I'm having a issue with a misfire on cyl6 that will not move even after replacing all hardware, plugs, coils, injectors, O2's, compression test, reset adaptations, replaced cam sensors, walnutshell blasting, checked rectaring, checked DME, running out of options and getting very frustrated. This is making my turbo upgrade a very expensive and unpleasant experience to say the least. Hopefully Vishnu/FFtec can come through for me soon, they have a good crew over there.
did you test another tune?
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      11-13-2012, 04:59 PM   #93
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did you test another tune?
no, there isn't really another tune for me to test with my specific turbo upgrade. I have a specific DME Flash and the piggy.
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      11-13-2012, 05:11 PM   #94
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Quote:
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So is your misfire still happening?
Yes, misfires went away after I installed rev2.5.
Sorry to hear about your problems, I know how frustrating that is...
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