My F4 has an Arrow exhaust, I guess it's what they call "RG3". It has four tips like the OEM. The tip has a rounded edge, but I'm thinking that there should be an inner tube so the gas goes out straight. With my tips, it seems that where the metal "curls" there would be a lot of turbulence. Anyway, I'm not even sure that I'm explaining this right. Please look at the two attached pictures and tell me if it looks correct, or somebody did some kind of butcher job on it and took something out. Thanks.
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