Fab speed replacement filter (Problem)...

[Frankyboy]

Hi guys...
As above bought a new k&n filter to replace the Bmc F1 filter that's been on there god knows how long and pretty much gunked up...

The K&n is only a touch smaller but on fitting and driving it drove like a pig misfire throughout rev range the engine wasn't having none of it..
Any ideas?
I guess I'm looking to get replacement Bmc f1 filter any you guys know for good stockists?...
Edit...on replacing old Bmc filter car drives A1...

 

[GMG]

...dirty MAF ?

 

[Frankyboy]

I've put old bmc filter on and drives A1...only plays up with k&n filter I'm wondering is it to small for the engine...but saying that its only marginally smaller than the bmc...

 

[montygraphics]

I am at a loss as why owners want to modify such a fragile engine in this way.

 

[drmark]

I am at a loss as why owners want to modify such a fragile engine in this way.

For the induction noise?
They don't add power (see threads on here) - and OE paper one probably performs better as filter too. Plus your car doesn't misfire with OE

 

[Frankyboy]

I am at a loss as why owners want to modify such a fragile engine in this way.

For the induction noise?
They don't add power (see threads on here) - and OE paper one probably performs better as filter too. Plus your car doesn't misfire with OE

Look out I now need a full engine rebuild on my fragile engine...Not :floor: ...Purely did it for induction noise and as I said it doesn't misfire with the Bmc filter fitted only changing as it's been on couple years and looks a bit gunked up....

 

[drmark]

I am at a loss as why owners want to modify such a fragile engine in this way.

For the induction noise?
They don't add power (see threads on here) - and OE paper one probably performs better as filter too. Plus your car doesn't misfire with OE

Look out I now need a full engine rebuild on my fragile engine...Not :floor: ...Purely did it for induction noise and as I said it doesn't misfire with the Bmc filter fitted only changing as it's been on couple years and looks a bit gunked up....

Don't joke about rebuilds Franky.
Mine's currently at Hartech. And we had a new engine (under warranty from Porsche) in our previous 997 due to the same (250 miles after we bought it and it was only 12 months old).

 

[Frankyboy]

After the repair bill I had roughly 5 years ago on a rebuild I didn't make any jokes when paying the bill....but over time it's all the joys of owning a 997...

You will get use to it Fella...Merry Xmas

 

[drmark]

After the repair bill I had roughly 5 years ago on a rebuild I didn't make any jokes when paying the bill....but over time it's all the joys of owning a 997...

You will get use to it Fella...Merry Xmas

Just wish I didn't love the cars so much....
Happy Christmas

 

[Frankyboy]

Totally get where you coming from :thumb:

I think all us 997 guys can relate to is yes we spend good couple of £££ on our cars...but the feeling we get back when driving them out weighs it....

It's going to be a cold Sunday morning tomorrow take the 911 out can't beat it.. :thumb:

 

[deMort]

The filter was obviously causing a restriction to the air flow .. might have been a duff filter or perhaps not the right one for your model of car :dont know:

Whilst im not a fan of modding these cars i still get it .. i'm not a fan as a modded car makes my life difficult when there's a problem basically .

Better sound both in and out of the cabin .. it's what people search for !!

Porsche these days actually fit a pipe from the air box to the cabin to increase induction noise for the driver .

Different filters , exhausts etc .. it's the sound that drives people .. i've driven cars that drone and i can't wait to get back to the workshop to ones that make me want to sing and not go back !! .

Tweak the car how you want it i say .. but realise that non Porsche items can cause issues and make my life at least difficult when there is a running issue !

Engines are not fragile as such .. but there are some issues which can happen ... as they can on any manufacturer .. i really don't want to go down the scoring route with this comment please.

 

[Frankyboy]

DeMort as always thanks for your input helped me out again Fella...
Another pint I owe you.. :thumb:

 

[1marc]

Do you have a picture of the other end of the BMC F1 filter? And ideally a part number? I'm looking for alternatives to the stock Fabspeed offerings. I thought the BMC cones were open at the other end and therefore potentially let unfiltered air in, but surely that can't be the case, so I imagine the hole is not all the way through?

Is yours like this:

 

[Frankyboy]

Received today measurements spot on...
And filterd both ends...cheers for your info

 

[1marc]

Awesome mate. Don't suppose you have the measurements for the old Fabspeed filter and new BMS do you? Seems shorter than the Fabspeed from the pictures. I can't measure mine at the no, as it's away having a carbon ducktail painted and fitted.