Debaffle DIY and performance change - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 05-18-2004, 01:49 PM
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EDIT: Detailed instructions below.

Now, after doing it on my car, there is a much more noticeable grumble in the engine and it pulls much easier and quicker at higher RPMs. I had a viedo to upload, but it won't let me. I'll work on that. Pics in a few minutes.

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#2 (permalink) Old 05-18-2004, 01:53 PM
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Baffle:

Debaffled:

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
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#3 (permalink) Old 05-18-2004, 02:03 PM
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So you just cut it out?

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#4 (permalink) Old 05-18-2004, 02:05 PM
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There are tabs you can press on, and it pops out. You can cut it out aswell.

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1999 e46 3 Series BURN IN HELL
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#5 (permalink) Old 05-18-2004, 03:47 PM
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Someone said the air box is glued together? How did you open it?

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#6 (permalink) Old 05-18-2004, 05:38 PM
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i am still not understanding how to do this on my 325

DAMNIT

anyone wanna do a diy for the 325... or help me?

V_v

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#7 (permalink) Old 05-18-2004, 06:01 PM
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Skaw, Im going to do this in baby steps. If you can't get it out after this, I will honestly be worried about your ability to operate an automobile.

1. Open driver door.
2. Pull hood latch.
3. Walk to front of car, stick hand uner hood and release the secondary catch.
4. Look at airbox.
5. Note the two bolts next to the airbox by the cruise control module.
6. Take off the bolts. I think they were 8mm.
7. Move cruise contol out of the way.
8. Pull up on the tabs holding the aribox lid on, then push the retainers back.
9. Move the lid out of the way and prop it up against something so it doesn't go back into place and get in your way.
10. Remove air filter
11. Frimly grasp box, and cajole it out of the engine bay.
12. Look inside the box. Pretending the box was still insde the car, look to the left. You will see a small circle.
13. Take a screwdriver, and poke inside the circle.
14. This will break it loose.
15. Remove from box.
16. Reinsatll everything in the reverse order.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
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#8 (permalink) Old 05-18-2004, 06:42 PM
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If the 325 airbox is signicantly different take a pic and we can figure out how it is done.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
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#9 (permalink) Old 05-18-2004, 06:53 PM
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thanks, but i have a 325 not a 318...

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#10 (permalink) Old 05-18-2004, 07:07 PM
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yes, and again, if the 325 airbox is significantly different take a pic. It still uses a similar snorkel, so the baffle should be eaually similar.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
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#11 (permalink) Old 05-18-2004, 08:04 PM
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sry when i posted that you hadnt posted yet (i didnt refresh)
here are the pics

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#12 (permalink) Old 05-18-2004, 08:10 PM
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my airbox hmmm
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#13 (permalink) Old 05-18-2004, 08:12 PM
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behind the airbox, what im thinkin is holding it on but im not sure...

the snorkel (?) inside the airbox... is very different from the 318..?

its leading into the actual intake not from the fan...

sorry if i am stupid about this, we all gotta start somewhere
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#14 (permalink) Old 05-18-2004, 09:19 PM
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Hrm, so I could use the instructions above on debaffling a 318 airbox also?
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#15 (permalink) Old 05-18-2004, 10:46 PM
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FOR AT 325i Follow these instructions:

1. Remove the airbox from the car. There's two silver clips on the MAF sensor. Then there is two nuts to the right side of the airbox (when you're facing the windsheld standing at the front of car) There's a duct on the front of the airbox you need to take off, wiggle the rubber tube of the other outlet to the engine. Also there is a temperature probe in the back of the airbox.

2. Once you've got the airbox out take a look INSIDE. Up where the outlet to the engine is there's an extra plastic piece. This is the baffle. Stick a screw driver in the seem between it and the rest of the airbox and pop it out.

3. Ok, so now you've got the damn thing out of the airbox right? Well no. Now you realize that there isn't enough room to take the baffle out. The solution is to cut a small gap in the baffle with a dremil tool. Then sneak it out the inside of the airbox. Or you could just it the whole thing into 2 pieces.

4. Reinstall your stuff, you're done.

Kevin

P.S. I let the inlet from the front grill off only because it was sitting on the other side of the car and I didn't see it till I closed the hood

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