K & N Filter part No. 16v Turbo ??

[julianm]

Eurocarparts are out of stock - does anyone have the correct ref. no for the K & N air filter (cylinder type to sit in original housing) for a `91 16v turbo with the Lucas injection?
Thanks if you can help, Julian

[Simon]

Get a JR or ITG

[Johann F]

Lucas EFI cars take the same filter as Bosch CIS 8v's

[tandino]

I recommend K&N over any other type of gauze filter purely for the fact they are proven in many tests to outperform other similar type filters.
Thats not to say their better in terms of filtration however - any type of gauze filter will not match a stock oe paper filter by way of design - gauze will allow fine particles through whereas paper will not.
Paper filters will clogg easier however and can restrict flow quickly in adverse conditions where a gauze filter will carry on working.
By way of design you will usually find that gauze filters that claim highest power increases are the ones with poor filtration and therfore highest flow and vice versa.

Pete.

You can find lots of types of universal filter here to fit your Air mass meter - you may need a cut down CV boot to mate the filter to the AMM.

www.filterpower.co.uk

[Janne Selinummi]

What would be the ideal aftermarket filter then? Cotton or ITG/Pipercross type? I'm looking for a bigger filter as I'm steadily pumping up the power of my car...

[tandino]

Any gauze filter that is rated over the power output you are aiming for will work.
Stock filters are usually paper and aftermarket (high flow) such as K&N, Pipercross, JR etc are either gauze or foam.
Its just a matter of choosing the supplier and making sure the design of the filter fits in the space available.
Picking a filter that has a power handling capacity rating lower than the output of the vehicle can obviously cause a restriction in performance.

Pete.

[Janne Selinummi]

Foam or gauze? Is either of these types better in filtration power? I'm always pampering my dear turbo

And is there a type advantage power-wise, with either gauze or foam?

Just tell me if I'm too silly asking all these darned questions...

[Alex]

With air filters there isn't any real gain in power, unless the existing filter is restricting the amount of air that the engine would like.

In a lot of the tests in the 'tuning' magazines where large power increases are found simply by bolting a cone filter on, the increase is quite often caused by the cone disturbing the air flow through the AMM. This causes the AMM to read less air than there really is and so run the engine lean. It is the leaness that causes the power, not increased airflow.

[Janne Selinummi]

I know all that, I was just wondering which type units would be best in a high-power application. In my case, my current cone filter is past the suggested power rating, and I would assume it's a restriction when I add more boost.