[MikeVictor]

Has anyone, after fitting a replacement flat panel filter (e.g. the K&N 33-2990) used a dyno to measure a before/ after power and torque on their 328i?

I'm only interested in actual results for a replacement OEM flat-panel, not a CAI.

[Jamesons Viggen]

I would be interested to see.

From years of doing mods like these, panel filters offer almost no gains, perhaps 1-2 whp which is within the norm for variation from dyno run to dyno run.

It certainly does not hurt and costs very little.

[eric@helix]

We'll probably do this in the near future. We, too, have seen pretty small changes in dyno results with drop-in panel filters (new paper vs. new cloth). A dyno is not a very good tool for testing intakes, since most don't replicate the air movement of road conditions, which is key the performance of an air intake. On an N54, with the hood open, we saw a repeatable 8whp change by removing the stock paper filter. We didn't have a high-flow drop-in at the time of testing, so we don't have those results. It's probably safe to assume the drop-in results would be somewhere in between those numbers.

A couple of other thoughts:

-A dirty paper air filter vs. a dirty cloth filter would show worse results.
-The 'noise' of our Mustang dyno is pretty small. We can do repeated runs on a car and get results scattered within one ft/lb.

[PGT]

sup Eric! Long time since the MINI days.

[MikeVictor]

Update: I've ordered a BMC filter for the car, once it arrives I'll get the before and after runs down and post up the data.

As Jamesons said above, I reckon any change will be within the error variance of the dyno itself.

I really shouldn't be doing this, filters are a gateway drug/mod...

[DR.Nefario]

Originally Posted by Dabaitu

Update: I've ordered a BMC filter for the car, once it arrives I'll get the before and after runs down and post up the data.

As Jamesons said above, I reckon any change will be within the error variance of the dyno itself.

I really shouldn't be doing this, filters are a gateway drug/mod...

N20 or N26? I wonder if that extra air filter holds back any hp

[MikeVictor]

Originally Posted by NNJF30

N20 or N26? I wonder if that extra air filter holds back any hp

Check my location - we don't have the N26 Down Under, mate.

[DR.Nefario]

Originally Posted by Dabaitu

Check my location - we don't have the N26 Down Under, mate.

You're lucky. The n26 has been nothing but a pain in my as$ lol

[MikeVictor]

Filter went in today. Induction noise is a little bit of ear-candy

Not sure if I can be arsed with the dyno though, the runs will cost as much as the part and I'm feeling tight atm :P

[BRM6]

Who is selling the BMC filters for the F30 328i N20? eBay = US$150? :O

Any stores? How much?

[MikeVictor]

Not sure who in Brazil sells them, I bought mine through a local distributor. $150 isn't far off the money however.

[wvoz]

Where about in Australia did you buy yours?

[MikeVictor]

Originally Posted by wvoz

Where about in Australia did you buy yours?

SouthernBM. Andrew will ship interstate also if you're not in Melbourne.

[wvoz]

Originally Posted by Dabaitu

SouthernBM. Andrew will ship interstate also if you're not in Melbourne.

thanks

[BRM6]

I plan to buy from the US or Europe. Everything here is more expensive.