I had the exhaust replaced on my stock 95. Converter and muffler. Everything was great for a few hundred miles. Then it stated getting loud again. Took back to the shop, they said the engine exhaust was running too hot causing the converter to burn and the pieces blowing thur muffler destroying it. The engine temp gauge has not indicated overheating nor does the engine in any other way. Haven't really checked the gas mileage, but it doesn't seem to use as much as I expected. Seem like a line of BULL to me. Is it???