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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Engine Cover Removal HELP!

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      06-10-2017, 11:26 AM   #1
Audioholics
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Engine Cover Removal HELP!

Hey guys;

I feel stupid asking this, but how do you remove the plastic engine cover of the M235i? I just got a JB+ and wanted to install it. In order to get to the TMAP sensor I believe the engine cover has to be removed.

I did a YT search on BMW engine cover removal and it showed the cover is screwed on. My engine cover has no screws. I tried to pull it off but it's on tight.

Any help, illustrations, etc would be appreciated.
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      06-10-2017, 11:30 AM   #2
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Just pull it straight up
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      06-10-2017, 12:03 PM   #3
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Start at the front. Do you happen to have speakers at home with removable grilles? If you do pop one off and look at it. There's a hole with a rubber ball that pressure fits in. The engine cover is the exact same thing just slightly beefier.
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      06-10-2017, 04:04 PM   #4
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Wait you should not need to remove the engine cover on the m235i for the jb+ the sensor is on the drivers side and totally exposed.
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      06-10-2017, 04:06 PM   #5
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Drivers side middle there is the throttle body just below is the sensor you want. I used a panel clip tool to release the clip from the front as the release tab is very small.
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      06-10-2017, 04:08 PM   #6
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Instructions are located here http://www.burgertuning.com/f_series...all_tuner.html
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      06-10-2017, 04:15 PM   #7
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Thanks Guys. Got it off.

Is the TMAP sensor the top one by the Y-cable?
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      06-10-2017, 04:55 PM   #8
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OR is it this sensor? Wish I had a diagram or something :/
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      06-10-2017, 04:58 PM   #9
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Quote:
Originally Posted by redmoe View Post
Wait you should not need to remove the engine cover on the m235i for the jb+ the sensor is on the drivers side and totally exposed.
The diagram on Burger instructions looks different than what I see in my engine bay. I will put the cover back on and see if I can see the sensor you're describing.
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      06-10-2017, 07:55 PM   #10
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Neither, I will try to send you a pic it is below the throttle shown in your first pic on the charge pipe. You do not need to take the engine cover off to assess it.
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      06-10-2017, 07:56 PM   #11
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Wait sorry it looks like you have it int the second pic just at a different angle
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      06-10-2017, 08:00 PM   #12
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sensor is in the middle of the pic
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      06-10-2017, 08:05 PM   #13
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Like I said previously it may be easier to use a tool under the tab closest to the sensor rather that trying to press in the release tab on the back of the connector.
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      06-10-2017, 08:18 PM   #14
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Thanks for confirming the sensor in my 2nd pic. I can't get the damn connector off, even with a small screw driver. I have a friend that's an Audi mechanic. Maybe he has a tool for this.
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      06-10-2017, 08:29 PM   #15
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are you sliding the screw driver under the clip at the front of the connector (sensor side not the back where the wire come out)? A small flat head under the clip and the wiggle the connector out. Make sure to leave the screwdriver under the clip while removing it.

Last edited by redmoe; 06-10-2017 at 08:39 PM..
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      06-10-2017, 08:37 PM   #16
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this is where you want to slide a flat tool into
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      06-10-2017, 08:51 PM   #17
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Quote:
Originally Posted by redmoe View Post
this is where you want to slide a flat tool into
Thanks Redmoe I will try again tomorrow when there is daylight.

BTW I snapped the engine cover back on. Is it normal that the front right side has a little play in it if u lift it lightly with your fingers? I didn't test how it felt prior to removing it. I'm fairly certain all 4 pegs are back in place.
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      06-10-2017, 09:07 PM   #18
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Mine has some play as well. Good luck tomorrow you should be able to get it with a small flat blade. Make sure you get a solid click when you mate the connectors.
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      06-13-2017, 09:08 AM   #19
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Quote:
Originally Posted by Audioholics View Post
Thanks Redmoe I will try again tomorrow when there is daylight.

BTW I snapped the engine cover back on. Is it normal that the front right side has a little play in it if u lift it lightly with your fingers? I didn't test how it felt prior to removing it. I'm fairly certain all 4 pegs are back in place.
Sometimes the rubber grommets will push though the engine Conner and not start on the ball correctly. You can pop them back into place though.

I always had a hard time getting the connection around the big rubber ring as well.
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      06-19-2017, 08:58 PM   #20
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Guys, I was finally able to get that damn connector off to install the JB+ installed today. Took it for a test drive and it does seem to give a nice little boost. I'm sure as the car adapts I will feel it even more. Nice relatively easy mod and now my M235i is faster than a stock M240i
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Last edited by Audioholics; 06-19-2017 at 09:03 PM..
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      06-19-2017, 09:15 PM   #21
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Awesome have fun with it
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      06-19-2017, 11:05 PM   #22
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Thanks Redmoe.

So just for clarity,

JB+ Factory setting +3PSI product produces:
wHP: +35
wTQ: +45

If you want to translate this to engine HP and TQ increases do you add 15%?

SO a stock M235i:
HP: 320 -----> 360 w JB+
TQ: 330 ----> 380 w JB+

Is this correct?
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