hello everyone, looking for some dyno results between d&d fat cat and dirty bird up yours.

 

D&d will give you better #s. I dont think you will see much of a gain with the dirty bird, but they look bad##s, and sound even better Imo

 

Here is my Dyno sheet with 103" - SE204 cams - Up Yours Exhaust

 

Apples to Oranges there. The D&D is a proven exhaust that can add horsepower to the engine with a proper tune. The Dirty Bird, being so short doesn't allow for a good tune and you'll lose a lot of low end torque.