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ST200 airbox vs stock box
- Thread starter Kalter
- Start date
If you go "stage 2," intake parts can give you some decent gains. https://dizzytuning.com/blogs/technical-documents/fiesta-st-stock-turbocharger-intake-testing
I’m using the same aFe Dry flow that I bought a year and a half ago. Still available under the same part number.
No oil, just dry element that’s washable. It may not be quite as high flowing as the oiled filters, but it claims better filtration - basically the best you can get short in a washable reusable filter at 99.2% which is why I went that route. It’s comparable to some middle of the road paper filters
Your cheap parts store FRAM paper filter is between 95-97% efficient. The fancy “Ultra” or Heavy duty aftermarket paper filters can hit 99%. Top of the line High Efficiency (Wix) and OEM paper filters are usually 99.5%-99.9%, sometimes better. Donaldson makes what are basically HEPA filters used for big diesel engines that achieve 99.98%. They licensed the tech to Amsoil for their “nanofiber” dry filters. Unfortunately Amsoil only makes them for limited applications and are mostly discontinued or I’d be all over that. They do still make cone filters branded for Injen, 14” cylindrical filters for carbureted engines, and a few random panel filters
By comparison your typical K&N oiled filter measures out at 95-98% or basically similar to a cheap parts store filter. AEM Dryflow claims 99%, similar to the aFe.
Most if not all of these numbers are obtained using ISO 5011 tests which basically use a “test” dust composed of a particular mix of particle sizes between 1 and 180 micron, which is why you don’t see micron measurements on air filters (but also makes even legit claims sound more vague)
Not going to bother with links because it’s pretty straightforward to search for the above numbers online.
No oil, just dry element that’s washable. It may not be quite as high flowing as the oiled filters, but it claims better filtration - basically the best you can get short in a washable reusable filter at 99.2% which is why I went that route. It’s comparable to some middle of the road paper filters
Your cheap parts store FRAM paper filter is between 95-97% efficient. The fancy “Ultra” or Heavy duty aftermarket paper filters can hit 99%. Top of the line High Efficiency (Wix) and OEM paper filters are usually 99.5%-99.9%, sometimes better. Donaldson makes what are basically HEPA filters used for big diesel engines that achieve 99.98%. They licensed the tech to Amsoil for their “nanofiber” dry filters. Unfortunately Amsoil only makes them for limited applications and are mostly discontinued or I’d be all over that. They do still make cone filters branded for Injen, 14” cylindrical filters for carbureted engines, and a few random panel filters
By comparison your typical K&N oiled filter measures out at 95-98% or basically similar to a cheap parts store filter. AEM Dryflow claims 99%, similar to the aFe.
Most if not all of these numbers are obtained using ISO 5011 tests which basically use a “test” dust composed of a particular mix of particle sizes between 1 and 180 micron, which is why you don’t see micron measurements on air filters (but also makes even legit claims sound more vague)
Not going to bother with links because it’s pretty straightforward to search for the above numbers online.
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Yes, I had that Donaldson patented, Amsoil nanofiber dry filter way way back when in my '00 LS1 Z28's air box as a drop in filter replacement for the AC Delco factory paper filter.
They even discontinued it for that application before I got out of that platform, so yeah they will only offer it for THE most popular rides out on the roads, of which ours is not.
I then switched to the aFe Dry Flow for that air box.
They even discontinued it for that application before I got out of that platform, so yeah they will only offer it for THE most popular rides out on the roads, of which ours is not.
I then switched to the aFe Dry Flow for that air box.
