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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 09-30-2013, 09:06 PM   #1
PiL
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Anyone run their cars w/o the undercarriage cover?

I had to take mine off because it was dragging/missing bolts. Thought that I should prob replace prior to winter, but was thinking it might be fine without it. Anyone running their m3 w/o this cover (below link)?

http://www.ecstuning.com/BMW-E46-M3-...Body/ES129182/
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Last edited by PiL; 09-30-2013 at 09:10 PM.
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Old 09-30-2013, 10:54 PM   #2
Andrie
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I've been running without that cover and the big aluminum cover for over a month now. I do plan to put it back. I did it to check for leaks after I washed the engine.
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Old 09-30-2013, 10:58 PM   #3
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No.
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Old 09-30-2013, 11:03 PM   #4
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Anyone run their cars w/o the undercarriage cover?

Most cars don't come with covers underneath. Not to say to say that it is ok without it though. I have to replace mine because a few weeks ago I noticed that a bit of it has been torn off, no idea why.
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Old 09-30-2013, 11:08 PM   #5
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Anyone run their cars w/o the undercarriage cover?




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Old 09-30-2013, 11:10 PM   #6
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Anyone run their cars w/o the undercarriage cover?

http://forum.e46fanatics.com/showthread.php?t=985694

This thread went on way longer than it should've.

Just buy the part and the proper screws when you can bro.

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Old 09-30-2013, 11:17 PM   #7
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Just replace the bolts and reinstall it properly.
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Old 09-30-2013, 11:19 PM   #8
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Anyone run their cars w/o the undercarriage cover?

Use zip ties. Works well.
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Old 09-30-2013, 11:22 PM   #9
dwtaylorpdx
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It protects some REALLY expensive bits from rock hits... Like the thin aluminum oil pan and the steering rack pipes..

Good Luck...

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Old 10-01-2013, 12:37 AM   #10
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Originally Posted by dwtaylorpdx View Post
It protects some REALLY expensive bits from rock hits... Like the thin aluminum oil pan and the steering rack pipes..

Good Luck...

Dave
Pretty sure the part OP is talking about is just for the rear suspension. Unless some one can prove it enhances Aero dynamics its only real function would be limiting grime from getting on the rear trailing arms and fuel tank.
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Old 10-01-2013, 01:00 AM   #11
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Anyone run their cars w/o the undercarriage cover?

Quote:
Originally Posted by NICKBRUM View Post
Pretty sure the part OP is talking about is just for the rear suspension. Unless some one can prove it enhances Aero dynamics its only real function would be limiting grime from getting on the rear trailing arms and fuel tank.
Umm no.


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Old 10-01-2013, 01:08 AM   #12
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I'm guessing the actual question is: is it ok to use the car while he waits for the replacement?
If so, I will say yes, it's fine.
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Old 10-01-2013, 01:36 AM   #13
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Originally Posted by Andrie View Post
I've been running without that cover and the big aluminum cover for over a month now. I do plan to put it back. I did it to check for leaks after I washed the engine.
Not advised! Bentley even mentions suspension damage. Hope you fare well.
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Old 10-01-2013, 04:35 AM   #14
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Anyone run their cars w/o the undercarriage cover?

The aluminium cover is a whole different ball game.
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Old 10-01-2013, 10:45 AM   #15
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I've been running without that cover and the big aluminum cover for over a month now. I do plan to put it back. I did it to check for leaks after I washed the engine.
That is NOT a cover. It is a structural brace.

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Old 10-01-2013, 01:45 PM   #16
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Thanks for the replies guys. Just for clarification, the cover I am referencing is attached toward the mid-section of the car, behind the engine and metal undercarriage piece that covers the engine compartment.
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Old 10-01-2013, 08:41 PM   #17
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Mine fell off a long ass time ago, I keep forgetting put it on but I assume BMW made it for a reason so I think it's best to keep it on
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Old 10-01-2013, 08:44 PM   #18
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Re: Anyone run their cars w/o the undercarriage cover?

That reason would be for aerodynamics

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Old 10-07-2013, 11:48 AM   #19
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You are not supposed to drive the car w/o the alu. Plate.
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Old 10-07-2013, 11:50 AM   #20
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Anyone run their cars w/o the undercarriage cover?

pretty sure it says "don't drive without stiffening plate" lol
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