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BMW 3-Series (E90 E92) Forum
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I need help something seriously wrong
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07-12-2018, 01:00 PM | #23 | |
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07-12-2018, 01:02 PM | #24 |
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07-12-2018, 01:53 PM | #25 | |
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i'm in new mexico that doesnt follow california standards, but i use costco gas which i believe comes from california or its california speced. I had timing issues not as bad as your on the 91 oct tune. When i switched to the acn tune i lost a bit of power but no timing issues. also make sure you have new plugs and coils. New Plugs and coils should always be done before a tune. |
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07-12-2018, 01:56 PM | #26 |
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07-12-2018, 02:55 PM | #27 | |
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There’s a guy in the n54 board with a 535 that installed an Mhd tune and his car is completely locked up...won’t even start. I know quite a bit about cars and I’m pretty handy at DIY...I know enough about myself to know when I’m out of my depth... |
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07-12-2018, 05:05 PM | #28 | |
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Drives: 2007 Black/Black 335i e90
Join Date: Apr 2011
Location: Holly, MI
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Lambda 2 is an O2 sensor. Probably on bank 2 pre-cat most likely. |
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07-12-2018, 08:16 PM | #29 |
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07-12-2018, 11:05 PM | #30 | |
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Drives: 2007 Black/Black 335i e90
Join Date: Apr 2011
Location: Holly, MI
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https://www.e90post.com/forums/showthread.php?t=1093372 Sounds to me like you need: -Walnut Blast intake valves -Replace Intake Manifold Gaskets -Clean throttle body -Clean MAP sensor |
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07-13-2018, 01:13 AM | #31 | |
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07-13-2018, 01:29 AM | #32 |
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Those are the only two codes which don’t really narrow down my problems. I’m guess I need to plugs,coils, o2 sensors and injectors and walnut blasting. I mean my car has 114xxx miles so it needs it for sure. But is there anything else I should look into. Like I said new to the many problems that occurs with this engine. Glad to found the forums so I could educate myself on this very temperamental engine.
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07-13-2018, 10:05 AM | #33 |
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if you havent replaced plugs and coils then go back to stock tune until there replaced. You should try to replace plugs at least every 30k, especially if your going to run a tune.
I would suggest you go on the N54 sub forum and read through the starter threads. The N54 makes a lot of power for almost no money but they require a lot of initial maintence before you start tuning. |
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07-14-2018, 06:25 PM | #34 | |
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07-16-2018, 12:35 PM | #36 |
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I am sorry i hate to try and correct but i also hate misinformation.
Corrections happen because of knock conditions. Spark plug change or ignition coil change should not have much to do with reducing knock. The only way it would be related is if the spark plug was not the correct one to begin with and was running very hot.. Thats the only reason a spark plug will help with knock. Spark plug gap alos has nothing to do with knock. A huge misconception. IT has to do with a misfire which obv is a completely different condition. What helps with knock ? Octane of the fuel. Heat reduction from the intake air/ larger intercooler. And other reasons such as reducing the boost and reasons which you cannot even modify such as static compression, ignition timing retard. Last edited by Pladi; 07-16-2018 at 01:07 PM.. |
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07-16-2018, 01:08 PM | #37 | |
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op has various conditions. He never replaced his original spark plugs and coils. He's also running wrong map on ACN 91 gas. He needs to go back to stock tune. until he needs to replaces the coils and plugs. then reflash to correct 91 acn stage 1 tune. my answer was on the lazy side since he hasn't done any of the suggestions i posted or done the research i suggested already. If he did he would already know his answer. |
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07-16-2018, 01:13 PM | #38 | |
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Going back to stock tune is a completely different approach and yes that will help.. |
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07-16-2018, 06:02 PM | #39 | |
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07-16-2018, 06:08 PM | #40 | |
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07-16-2018, 06:30 PM | #41 |
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When you open the maps on the device for Stage 1 there is a box that reads ACN 91 / CAD 94, make sure you use that one when you flash. The other box next to it reads 91 OCT / 95 RON, don't use that one
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2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
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07-16-2018, 06:49 PM | #42 |
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Ok ya that was what I was on before. When I reflash I’ll go back to that thank you
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