The official air filter thread.

[winmutt]

Reusable cone vs Puralotor vs Wix.

When I first got my turbo the stock airfilter was all screwed up and for $20 I picked up a cone filter. Using the stock U tube I put the reusable filter on. Despite what anyone says it was a performance increase, specifically when I put the manual transmission on and started letting the engine spend more time in the upper RPMS.

Few weekends ago I stuck a new puralotor and the stock air filter setup back on. There was little to no difference until you started hitting upper RPMs. I could feel it bog down. So much so I was seeing ALOT more unburnt fuel in all ranges.

Yesterday I picked up a WIX, having read it was the highest flow for OEM spec'd. And let me tell you. No more bogging in the top end. 0-60 be damned I dont believe in drag racing on a diesel. Its about real world driving. The WIX is the happiest middle ground between performance and reliability.

Comparing the two side by side, the WIX weighed ATLEAST 8oz more. For every one fold in the Puralator I had 1.5-2 in the WIX. I didnt sit there and count it but visually there was clearly a difference. The WIX has the greatest surface area the number of folds was alot closer to the the cone filter. More surface area means higher CFM. The only way the cone filter could have out performed the the WIX was in less filtration.

WIX++
Puralotor--
CONE: only if you want a new engine.


WIX:


Purolator


K&N