Replace Air Filter On New 325i With K&n?

[djs1122]

Brand new 2004 325i. Anyone feel it would be beneficial to replace the OEM air filter with a high flow air filter from K&N?

Thanks.

[KillFox]

Probably would help with throttle response a little. Much more noticable if you put an intake in there, lots of ppl go for the Gruppe M at rennsport.com for their bimmers. That is a very expensive intake, others use ECIS and stuff. You can always get a gruppe m look a like off ebay, no real point in spending an extra 500 on name recognition.

[exjarhead328]

The K+N air filter is a nice little, inexpensive mod that will add some extra kick, like KillFox said. I installed one on my 328 and am happy with it. It's enough of a difference so you can actually notice the extra power, especially low end.

[FarhadBimmer]

I just put this filter in my 325xi. I can feel the difference. I still need sometime to be able to provide you some numbers.

[BMWer14]

Agree with all the previous...I have one in my 323i...plus the added bonus of better filtration over paper filters.

[rashid]

I also had one on my 530-2002 & I’ve noticed a little difference at the beginning only.

I purchased spray & oil but I don’t know how to use them.