Quote:
Originally Posted by metromizer
A statement worth repeating...
.........I found you really need to experiment with your particular combination when tuning a system for racing, I have to believe the same would hold true for max FE.
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EXACTLY! On all of the cars that I have drag raced I have found out the folowing:
If a turbo is in place the bigger or less restrictive, or no exhaust at all had the best performance, even when all else was stock.
On my carb or efi cars...except that 94 Plymouth...a better flowing exhaust worked the best, but open exhaust worked worse than the stock set up. It did take several mods to make the open header mod work better than a larger full length system with a good performance muffler in place.
Starting a few years ago some dragstrips required that none of the sportsman cars exceed a certain decibel reading from a certain distance and a lot of the guys that run rail dragsters fiound quicker and faster passes after they had huge collector mufflers put on!
