The answer, like that to so many other engine related questions, is: it depends. In a stock setup, the air cleaner assembly is proper for your engine's requirements. Now, the ifs start. If you have modified your engine's flow characteristics, your stock air cleaner lid is still good at least up to the RPM required to stimulate anything higher than max flow before modification. This will probably never happen a normal street driven car. Let's say you have increased max flow by 10%. You have to spin If your air cleaner lid was not previously restricting flow at high RPMs, your stock lid is still good up to the RPM where that air cleaner is unable to provide the flow the engine is demanding. This will probably never happen in a normal street driven car. Then, and only then, does your engine require a less restrictive assembly. How do you know? Expensive time on the dyno. This will also probably never happen in a normal street driven car. Bottom line -- if you think you need more air, spend the money and get a dual snorkel lid so you will sleep better at night. Even if you don't actually need more air, it looks cool as hell. -- David "Blomberg" <blomberg@xxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent by: cc: mailing-list-owner@imper Subject: IML: Duel Snorkel ialclub.com 01/19/2005 06:54 PM Please respond to mailing-list Is there any advantage/improvement on engine/fuel performance by replacing the single air intake with a duel on a 413. Larry 1960 LeBaron Sedan http://www.imperialclub.com/Yr/1960/Blomberg/Page01.htm ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm