Ok, so I have been looking at ways to fit a larger air filter on the car. The issue is the proximity of the turbo to the fuse box. Until now I have been using a low profile K&N filter attached directly to the turbo ( RU-2410). In the course of my research I found that this filter flows about 371 CFM, not enough to make the power I'm looking for. From what I found each square inch of filter media flows about 6 CFM.

My solution is to run a 4 ID inch silicone 45 degree elbow, with 4 inch legs. I have a 9 inch conical filter left from the SC I will try to fit first, but am leaning towards a shorter fatter filter. My question is what are the CFM requirements of the turbo TL. The two filters I am looking at are RD 1450 and RD 1460. The 1450 flows about 800 CFM and the 1460 flows about 1100 CFM. The 1450 is 7 in round top to bottom and 6 in tall the 1460 is the same just 9 in tall.

I am waiting on parts and will post pics once everything arrives.

 

That's pretty much what I have now. I had to remove the bottom of the fuse box and rearrange the charge piping to clear.

I'm able to fit a 9" cone filter (K&N RE-0870). I found info that says this filter flows 900cfm.

IHC says that with this filter, I should be good for at least 400whp. After putting in my new clutch, I'll probably try for higher boost so I may need another as well.

I am considering a EaAU4090. It's the same dimensions that I have now, but being a dry filter I would think it would flow a little better. Haven't been able to get any flow rates on this one though.