Air filter upgrade

Triggerfish

Triggerfish

Junior Member
Messages
109
Has anyone bothered to fit an 'upgraded' air filter?

Seems like a relatively inexpensive modification, made all the more attractive by the fact it's invisible, but,

"Saves weight".....who gives a sh*t!!

"Increased BHP and torque".....really?

Sounds too easy. Whats the general consensus?
 
conaero

conaero

Forum Owner
Messages
34,630
Yes, I fitted the BMC. Not because I believe the claims, simply because it was cheaper and more readily available than the OEM one. Yes, it breathes a little better too which is a plus.
 
Geo

Geo

Member
Messages
616
I too fitted a BMC for the same reasons as conaero. The filter comes pre-oiled and can be cleaned and re-oiled time and again as per K&N type.

Here is a link that may help regarding the cleaning:- https://www.knfilters.com/cleaning.htm

If you do fit a BMC, once fitted let your engine idle about fifteen to twenty minutes to let it adjust to the greater airflow. I didn't the first time and wondered why it didn't want to rev properly!
 
FF1078

FF1078

Member
Messages
1,123
Yes I fitted a BMC at the same time I fitted the X pipe. Didn't think it would hurt and would make it breath better with the exhaust.
 
Spartacus

Spartacus

Member
Messages
3,185
The oiled filters always worry me as I've heard stories about them contaminating the hot wire on the MAF sensor ?
 
Geo

Geo

Member
Messages
616
Spartacus said:
The oiled filters always worry me as I've heard stories about them contaminating the hot wire on the MAF sensor ?
Click to expand...

Now that's an interesting comment, and not one I had thought about. It could be a possibility if someone drenches it in oil instead of giving it a very light spray.

It would be good to hear from anyone who has suffered MAF issues with these filters.
 
conaero

conaero

Forum Owner
Messages
34,630
Ran them in my GS, and the Strad one has been in 18 months.

Happy to report no issues.

I believe issues can start if an amateur is over zealous with the re oiling.
 
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D Walker

D Walker

Member
Messages
9,827
I have the BMC in my GS, I need to check the service invoices to see when it was "last done" as the one that was in was knackered, and some fool had rounded off all the fasteners on the filter box
 
O

Ozmurc

Junior Member
Messages
91
both my QP and Murcielago had BMC's fitted when I bought them. I'm not a fan of any oil type filter- paper filters do a far better job. I switch back to paper when I service the car. I've not seen any impartial evidence to show any performance benefit from cloth filters.
 
T

TimR

Member
Messages
2,731
This old chestnut..!
If I ever get to modding the intake on the 42, it'll inevitably mean using a K&N or similar....
 
Gp79

Gp79

Member
Messages
1,398
The induction noise be the only noticeable difference, if you can hear that over the V8 at 7,000rpm
 
T

TimR

Member
Messages
2,731
Gp79 said:
The induction noise be the only noticeable difference, if you can hear that over the V8 at 7,000rpm
Click to expand...
If thats aimed at me..? I think better access will be a noticeable benefit. And the ingress of water will be less of a worry too. Plus the risk of taking out the airbox on speed bumps will be greatly reduced. Its actually a bit of a no brainer IMO...! ;)
 
Gp79

Gp79

Member
Messages
1,398
TimR said:
If thats aimed at me..? I think better access will be a noticeable benefit. And the ingress of water will be less of a worry too. Plus the risk of taking out the airbox on speed bumps will be greatly reduced. Its actually a bit of a no brainer IMO...! ;)
Click to expand...

No, not aimed at you!

Know where you’re coming from with the risk of hydraulically locking the engine but the aftermarket filters are still in the same air box as the OEM.
 
conaero

conaero

Forum Owner
Messages
34,630
It’s been a while but the 3200/4200 is very seseptable due to its stupid snorkel positioning. I feel owners are just more careful these days.
 
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