Turbo Fail With K&n Xstreme Filter On

[Ben_ashe]

Hey guys,

Tried fitting a k&n Xstreme air filter to my Focus ST-2 TDCi , got about 200m and then the turbo began to fail and the car was crying for an immediate service.

How do i tackle this problem?!

Cheers!

Ben

[Ben_ashe]

I have only seen a clip from youtube where the owner mentioned cutting 2mm off the rubber seal and his is working fine.

Can it be that simple?

[james_60]

Hi

Turbo failing from an air filter, nah, sounds like a manufacturing defect on the turbo,

Different engine but i have a Green cotton filter on my 1.6 116ps tdci (2013) and i have covered 22500 miles with it

Jamie

[Ben_ashe]

It works perfectly fine with the original air filter in, but when i swap the K&N in the revs dont go up, the turbo doesnt kick in, Wont get past 50 mph even on a mile long straight

[james_60]

Hi Ben

Has it been mega over oiled perhaps thus strangling the engine

thats all i can think of tbh

Jamie

[madmole]

Sounds more like its getting too little air. Sure the K&N isnt blocked in some way and that all the sensors are still connected and plugged in

Had a K&N on mine since I got it, no problems at all, nor on my last 5 cars that have all had K&N's and most have done 200k+ miles