Review on AEM 20 401S 2 5 Bypass Valve by Keith Wolff

Looks very nice, like all AEM products, not the easiest of installs as you have to remove the air intake and cut out the section to install the bypass valve. First make sure you install CAI to find the right place for it and also remove any shavings left over from pipe cutting unless all that crap gets into your engine and is bad for the engine. I don't know if it still works and I hope I don't have to test it, but it's good insurance just in case. I installed mine on an 03 Accord i4 with a 2" drop and an AEM CAI, I installed a valve on the pipe behind the battery, fits well, looks good.