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2003 BMW 325i Build Thread - Photo 1 of 7

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2003 BMW 325i

2003 BMW 325i Base

Caleb White

Updated July 6, 2025

The Story

Been about 4 months since I bought my E46! Regardless of the small, annoying headache it’s given me, im more than happy with the whip so far. Not sure how many others fall into this group, first day I had it I obviously went to YouTube and searched e46 and who pops up?? none other than Alex Martini himself. “So you wanna know how to mod an e46?? EASY BABY” he’s right tho 99% of them are silver. Haven’t gotten to those front/rear bushings yet, sorry 🤷🏻‍♂️

Modifications

Performance

Completely overhauled the ccv system, and currently in the middle of doing the same to the cooling system. All mishimoto cooling parts of course
K&N Cold air intake kit, replaced all vacuum lines
Swapped out the Dual Vanos assembly for a rebuilt unit from Dr. Vanos. Upgraded seals and bearings. At this time I also did the valve cover gasket, and put in new spark plugs and Dinan Coil packs

Exterior

Replaced side marker lights with sequential smoked ones, removed and disassembled the headlights, cleaned, sanded, polished and clear coated the lenses. Still look brand new. Also replaced front turn signal lights with clear lense, clear housing ones. Dope.
Replaced all exterior door trim clips, actually cleaned it up a lot. Added a windshield banner as well as some sick stickers obviously.