Quote:
Originally Posted by Trion_f85
I think those are more about having total control of when the flaps open/close, than they are about the opening angle. There are some apps that those that for you as well like carly
If your aim is higher flow of exhaust gasses, A sport cat or catless could be better spend tbh.
You get additional free Hp
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I think they re bout having more control also, but they're also claiming the stock doesn't open up all the way. I actually have an f15 but I am putting f85 bumpers on it, so I have an f85 muffler and I want to be able to close the valves in certain scenarios.