Air Filter Shootout Test - Results!

[JET]

Wow, it is interesting that the Amsoil made the most HP, but the lowest torque. Any ideas why guys?

[Kracka]

Wow, it is interesting that the Amsoil made the most HP, but the lowest torque. Any ideas why guys?
The Amsoil scored the 3rd highest whp.

[Halon]

Look at the torque curve for the Perrin and Amsoil. I'm not an expert at reading into these things, but I find it interesting how they are so much lower at around 4-4.5k then the rest. K&N's torque numbers appeared to be fairly decent. Those dyno graphs are real nice to look at rather then just hearing max HP numbers. Thanks for the graphs!

[Kracka]

You are welcome sir, I owe Jordan @ MAP Jimmy John's for them ;)

I've also asked Scheides to put together a graph showing knock since his theory is that knock is what caused the torque numbers to fall for the Perrin. I suppose I could do it too, but I use Excel all day at work and am sick of it!

[scheides]

I picked up my perrin filter last night from MAP and was surprised to see that it was not too oily at all! I wrapped it in paper towels and dabbed and dabbed and dabbed, they stayed clean! There was a small oil film in the bag, but that was about it. I'll post pics of the new bishin setup all installed here soon.

I also took the opportunity to spray down my new MAF with about half-a-can of maf cleaner and then use a bit of super glue at the 4 corners of the honeycomb to help keep it in place. I have plans to upgrade the turbo, and don't want it bending/popping out!

[Kevin 1G Drummer]

One thing I didn't hear much mention about was spool time. Was there any noticible differences between filters?

[scheides]

I have my spool slowed down w/ my bcs (you can see it in the dyno sheets) to prevent compressor surge, so this is not really something that would be good to compare. I would imagine they all perform within 100rpms of each other (i.e. hard to test)

[Super Bleeder!!]

Do those foam filters actually filter anything?

I remember that being a huge problem with the similarly designed HK$ filters from awhile ago.

[scheides]

Yes, these are a better design, the foam is thicker so they flow really good but filter quite well too.

[Kracka]

UNI filters (maker of the Perrin) do a good job trapping dirt and dust particles. These filters are heavily used in off-road vehicles. HKS foam filters are much less dense and now they aren't even oiled. My Vibrant filter did a very poor job of filtering since my MAF was caked in dirt, but I cleaned it all off before installing the Perrin and will check on it every few months to make sure its staying clean.