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I'm planning on getting the Milltek decat and some custom piping from it to the end tip with only pipes, kinda like what you have done. Aside from the noise level, are you loosing any torque and gaining any power at the top?
I don't think I really feel any torque loss and I feel like it's faster all around and picks up quicker at freeway speeds but I'm just using the Cobb access port stage 1 91 tune I think with a new tune I could get even better results

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