[Ivoryandersonn]

Hi all I’m new to the modding world (female btw) and I’m trying to make this car louder and want to add some tips to make it look more agressive. here are my questions:

1. my car is all stock and I’m wondering if there’s a diffuser for this 2013 328i xdrive or would I need to do a whole rear bumper conversion to add a diffuser?
2. Would doing a muffler delete be a good sound for this car or straight piping it? I’m not sure I’m into a deep burble noise
3. Where can I find tips that are for dual pipes single exit?

Thank you all who respond I’ve included some photos for reference.

[Oksamit78]

1. No diffusor. This is a one piece rear bumper you have. You will need a complete new bumper if you want to have a diffusor (one sided outlet or dual sided, wide or narrow outlets).

2. Look at this post for muffler delete on the car similar to yours: https://f30.bimmerpost.com/forums/sh....php?t=1058863

3. The tips on your car (as all BMWs of recent years) are slip-ons over the exhaust tail pipe(s).

OEM part numbers are as follows (Items # 6 & 7):


Choices are:
Aluminum look (Part No: 18307610638): $83 CAD ea + tx
Chrome (Part No: 18307610637): $91.50 CAD ea + tx
Black chrome (Part No: 18307610639): $91.50 CAD ea + tx

You can order them online here: https://shop.bmw.ca/
Just pick the dealer closest to you. Or call the Parts Department at the closest dealer to your place.

And then you have a cheaper option from Aliexpress, such as:
https://www.aliexpress.com/item/1005...d=LcVq5nrZ2doF

No other "aggressive" (larger diameter) tips could fit over the stock tail pipes - they are too close to each other.