i found this on ebay and it seems like the same thing as the AEM product except the plastic even tho it says AEM but do u think it will work the same? i dont think id get this one cuz it dosnt have a pipe diameter but are products like this the same as AEM just without the name? is that all your paying for for AEM? i also did a product search on bypass valves. i got some mixed opinions and ive herd they work and ive herd they r pointless. could i get some help on the product similarity and if bypass valves even work? thanks alot fellas. 
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