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It is not significantly louder. I haven't driven it on the highway, so I don't know what it will sound like going down the road in OD at 75.
Yes, it has more power. Just seems to "get on it" quicker. D cam is reputed to be more of a higher end responsive cam, and this exhaust seems to give it more power and response at lower end. I just spent $187, so of course my engine now has more power.
As most others will have mentioned, exhaust is only one component in the "intake-to-exhaust tip equation, but my intuition (hah!) was that with the increased volume of the B20, a 2" system was gooing to make an improvement over the stock 1-1/2" dual downpipe system. And yes, this bolts up swell to the dual exhaust manifold - no contact anywhere.
I am a little concerned about the increased heat in that part of the engine compartment as a result of more surface area (downpipe diameter is a little larger), dissipating heat. Although maybe it's just that NEW metal may dissipate heat better than rusted metal.
In NL you can probably purchase this for even less. I believe that this was manufactured on your side. I'd be curious.
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