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a thought just occured to me concerning removing heat from the exhaust.
I don't claim to understand all of it, but while reading up on backpressure in exhaust systems, I read a somewhat technical article concerning the need to keep the exhaust as hot as possible to facilitate it moving down the pipe as efficiently as possible. To that end, some car makers will insulate the exhaust piping to keep it warm. I'm all for getting "free energy", but I am concerned about the cost of cooling the exhaust.
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 RIP Maxima 1997-2012
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Originally Posted by jamesqf
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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