Instead of having to sit through each vid, i posted a screenshot of the Dsport dyno runs which includes the company name, exhaust name, Part #, MSRP, on-dyno dB, dyno chart, and product images. I've captioned each image with the weight of the exhaust as measured by Dsport.
enjoy
Please Note: For some reason Dsport decided to zoom in on the dyno charts for the ASR muffler delete, and the Berk cat back. The scale of these two graphs are different from the other graphs. Keep this in mind when looking at the gains as they will appear larger than they are.
Agency Power weight: 25.2 lbs
ASR delete weight: 2.5 lbs
Berk cat back weight: 33.4 lbs
Berk delete weight: 3.8 lbs
Greddy Evo3 weight: 34.8 lbs
HKS weight: 36.6 lbs
Isis weight: 33.6 lbs
Magnaflow weight: 36.4 lbs
MXP weight: 40.8 lbs
Perrin non-resonated weight: 29.2 lbs
Perrin resonated weight: 33.6 lbs