Dtkf

Hey guys. Just wanna know if it's worth it to get the bmc air filter for 991.2 Carrera s ?

2010panny4S

Had a set on my Panamera 4S, didn't really feel much difference in regards to seat feel.

SpeedZ

I'm getting it installed in my car tomorrow! We shall see if the butt dyno detects a difference. I've heard from most that it's mostly a sound change.

Psorcery

Makes a minor change in sound and performance on a 991.1. Minor.

I've got it on the 991.2. It went along with exhaust parts. Can't say it made a power change. If you truly know your car and it's sounds you will hear a slightly louder turbo spool at certain times.

luv2sleep

I had a BMC filter installed when I had the cats replaced since the bumper had to be off anyways. The filter itself won’t give you any noticeable gains but it does provide “improved” airflow for future performance upgrades (ie. stage II tune).

PCA1983

I have the X51 PowerKit on my 991.2 C2S and have the catless pipes. Sound is awesome. Less than 6k miles so far. I will install the BMC at around 10k miles or so. Unless I get brave and install a COBB tune. I would want to install the BMC along with the COBB while the rear bumper is off.

Dtkf

no CEL with the catless pipes without tune?

iphilips

I just had them put in my 991.2 GT3, you can hear the change in tone.. will see how it goes on the track on Thursday.

PCA1983

Yes, a nuisance CEL, even with the extended mini-cats with extensions on the O2 sensors. The CEL can be reset, but comes on again upon stopping and restarting. Definitely the best sound a 3.0 TT can produce.
Re the BMC, anybody guess how much extra power it might produce on a 450 Hp without a tune? Any noticeable improvement in Turbos' spool up time?

GraSox

Can BMC filter last 40K like OE? If not seems like pain to have to remove bumper just to change air filter.

flickroll

^^+1

LexVan

They can not. And that alone was why I did not do the change over (to the 991 GT3RS version) back in 2017 when I did my 40K service.

AdamSanta85

I thought the OEM GT3's had BMC already? Or was that just 991.1

Edit- Might just be GT3 RS...

LexVan

Correct.

The OEM BMC filters are about $160.

The OE Porsche (GT3RS) filters are about $360.

Big Swole

With the size of the factory filter and the air required to make the low hp numbers of these cars, I just never buy into these filter gimmicks.

My previous "toy" was a my built Ram Cummins 4x4 that made 1050 WHP and 1700 WTQ with a compound turbo setup (64 over an S480) that made 75 lbs. of Boost from an air filter with less surface area than the filter in my Turbo S.

I think a clean factory filter is FINE for the low factory HP numbers these cars make compared to other extremely modded cars / trucks make.

Plus, if you don't clean / re-oil correctly, you could reduce filtration and risk engine contamination.


my .02