Quote:
Originally Posted by aerohead
The base pressure behind the 300 will essentially be at the same pressure as where the air separates.If the side tailpipe is within 6-inches of the tail,there may be little Delta-P between the two locations.Also,the side flow is dilluting the exhaust stream through mixing,which wouldn't necessarily occur behind the car,making it nastier for following motorists.
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I think sending more concentrated exhaust to following cars is reason enough not to do it. It could be a pretty significant difference considering that cars intake air for the HVAC at the cowl... So someone drafting you would get your exhaust in the cabin.