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Re: mufflers blew apart
lol, no haven't done that since i was kid in my dad's town car. Engine is running perfect no backfires ever. They did ask me what my compression is and what heads i have. Told them 11.5 to 1 with good set of iron heads. What does it matter, it doesn't say not recommended for 11 to 1 or higher comp. If i knew that i wouldn't of bought them.
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