Has anyone fitted one? Are they worth 50 quid? It's a twinair engine
Thanks

triumph7 said:

Has anyone fitted one? Are they worth 50 quid? It's a twinair engine
Thanks

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Nope, waste of money.

Better buy a quality paper filter, and maybe change it a bit more often.....

Thanks. Confirmed my suspicions....

K&N airfilters are a must when driving big, carburated V-8 engines in desert conditions.
They do nothing for small, fuell injected European cars..

Lots of sweeping generalisations here. Any evidence, or just your opinion?
I have heard K&N are not as good as other oiled filters like Green and BMC, but I don't know for sure. I run a BMC in my TA and it appears to offer a slight advantage in the ability to rev more cleanly. In my old C2 VTR there was a distinct improvement in torque.

http://www.nicoclub.com/archives/kn-vs-oem-filter.html

Don't fool yourself, and remember, the oil of ANY oiled filter will destroy the (heat) wire in any MAF sensor, sooner or later..
So stay away from oiled filters in any fuel injected engine, but do use them in big, carburated engines...( in fact, that's what K&N and Co. are made for in the first place...)

The air filter does more then filter air it also keep as much water out of the engine on rainy days, open air filters do not.

The Pretender said:

The air filter does more then filter air it also keep as much water out of the engine on rainy days, open air filters do not.

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Correct, that's why the factory filter housing is shaped like it is !!!
It's also shaped to take in as much cold air as possible, unlike some (open) aftermarket "performance" filters..
You just can't beat the factory on this..!!

I have worked a lot with japanese sportscars, like skylines, supra, evo and such. The MAF sensor failing was a common problem on the cars with an oiled filter. Rough idle, and slow through the RPM bands. I think this was the most common problem together with bad sparkplugs and battery, coming from the boat all the way from Japan.

I will never use an oiled filter again, unless ofcourse it is an old v8 or something.

So what about all the oil and crap that comes into the air filter box from the engine breathers - doesn't this damage the sensor?

muttleysdad said:

So what about all the oil and crap that comes into the air filter box from the engine breathers - doesn't this damage the sensor?

Click to expand...

In practice, no.
It's the constant fine oilmist from an oiled filter that does harm the MAF...