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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > I need help something seriously wrong



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      07-12-2018, 01:00 PM   #23
blake11544
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Quote:
Originally Posted by TemjinX2 View Post
looking at your logging...you look like your on the mhd stage 1 91 map.

Since your in california...you have crap 91. You need to be on the mhd stage 1 91 acn map. ACN (Arizona, California, Nevada gas)

The regular 91 map has more aggressive timing and higher peak psi of 15.

The acn map will have less timing and peak boost target of 14 psi.

Reflash to the ACN map and relog.

More technical problems with the N54, post on the N54 sub forum. You'll notice there more technical users on that side of the forum vs general sub forum
Summertime gas is shit haha jk I have no idea I’ll give it a try though.
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      07-12-2018, 01:02 PM   #24
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Originally Posted by Pladi View Post
You have 100 % pedal at 1600 RPM.. multiple corrections tons of boost bad fuel...total mess Why do you people tune cars and know NOTHING about cars ?
Like I said I’m new to n54 engine. No need to hate rather just teach me so I know is all. Thank you
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      07-12-2018, 01:53 PM   #25
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Originally Posted by blake11544 View Post
Summertime gas is shit haha jk I have no idea I’ll give it a try though.
california gas and california spec gas basically has more detergents to improve emissions so basically 91 isnt real 91..its slightly diluted.

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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Originally Posted by Pladi View Post
tune smart, dont tune dumb .. learn what you are doing to your car. We live in the world of information its everywhere.. just lazy people want to be fed all answers.
yeah i agree, but if its something easy i dont mind replying.
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      07-12-2018, 02:55 PM   #27
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Quote:
Originally Posted by Pladi View Post
tune smart, dont tune dumb .. learn what you are doing to your car. We live in the world of information its everywhere.. just lazy people want to be fed all answers.
I’m a mechanical engineer...I understand engines and turbos...what I don’t understand is coding and programming. Something about overwriting the stock programming with something that I don’t really understand and wouldn’t know how fix makes me nervous.

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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Quote:
Originally Posted by blake11544 View Post
I have terrible logs right now I’m new to the n54 community so need some help with what’s going on. All I know now is I might have leaky injectors. My car is a 2008 bmw 335i with 114500 miles. Only codes I got are lambda control 2 and now I’m getting shawdow codes for super knock which is scary. Please help btw I’m stage 1 MHD
https://datazap.me/u/blake11545/some...&data=3-24
You need to give us the actual code you are getting.

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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Originally Posted by mweisdorfer View Post
You need to give us the actual code you are getting.

Lambda 2 is an O2 sensor. Probably on bank 2 pre-cat most likely.
It’s 2c7f it’s all I’m getting. Any suggestions on what I should do to get my car tip top.
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      07-12-2018, 11:05 PM   #30
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Quote:
Originally Posted by blake11544 View Post
Quote:
Originally Posted by mweisdorfer View Post
You need to give us the actual code you are getting.

Lambda 2 is an O2 sensor. Probably on bank 2 pre-cat most likely.
It's 2c7f it's all I'm getting. Any suggestions on what I should do to get my car tip top.
Throttle body position sensor

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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Throttle body position sensor

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
My apologies I’m getting 2c7f and now I’m getting 29e0.
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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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Quote:
Originally Posted by TemjinX2 View Post
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.
They should help my corrections right
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      07-16-2018, 10:20 AM   #35
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Originally Posted by blake11544 View Post
They should help my corrections right
yes
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      07-16-2018, 12:35 PM   #36
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Quote:
Originally Posted by TemjinX2 View Post
yes
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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Quote:
Originally Posted by Pladi View Post
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.
stock tune should fix his corrections, but he needs to relog to confirm.


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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Quote:
Originally Posted by TemjinX2 View Post
stock tune should fix his corrections, but he needs to relog to confirm.


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 long 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.
Its very simple. All i am saying is that changing spark plugs and coils will NOT help corrections.. thats all. we dont want OP to thing that is the case.

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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Quote:
Originally Posted by TemjinX2 View Post
stock tune should fix his corrections, but he needs to relog to confirm.


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.
I’ve done everything you’ve suggested and been taking in everything you are saying plus I’ve been reading up a lot. I already had someone tell me that 91 oct was not right because California gas isn’t the best. So I went to acn as but I’m back to stock after what you had told me. Waiting for coils and plugs to come in. I just wanted to Expand my knowledge on these engines is all. Like they say you can give a man a fish and he can eat once but if you teach him to fish he can feed himself everyday. Or however the hell you say it.
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      07-16-2018, 06:08 PM   #40
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Quote:
Originally Posted by TemjinX2 View Post
stock tune should fix his corrections, but he needs to relog to confirm.


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.
And how is acn wrong map there is only 91 oct or acn that I can really use
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      07-16-2018, 06:30 PM   #41
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Quote:
Originally Posted by blake11544 View Post
And how is acn wrong map there is only 91 oct or acn that I can really use
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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      07-16-2018, 06:49 PM   #42
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Originally Posted by BM3Rrrr View Post
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
Ok ya that was what I was on before. When I reflash I’ll go back to that thank you
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