I previously had a K&N Aircharger with plasic intake tube and currently use a C&L with an aluminum intake tube and MAF housing. Both were good CAIs in my opionion, however I had occasional stalling issues with the K&N system, which could have been eliminated by re-installing a MAF screen, that have not occurred with the C&L setup. The C&L CAI may significantly lean out your A/F ratio however, so a tune is recommended if using it.