Onto my question, what free flowing mufflers have you had success with? Oh, my actual problem is it MUST BE QUIET. I pull my stock trailer with this truck and I Know 2 chamber flowmasters would be brutal in the trailer. I've never needed a quiet free flowing muffler before. Our area doesn't do emissions or vehicle inspections so anything goes. Where as I know in some areas, even race tracks have noise restrictions.
I've read up a lot, but prefer first hand knowledge when available. So if anyone's had to deal with this challenge, share your experience. Even if its a fail.
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