Quote:
Originally Posted by Ed Wright
Jeff, how can you be sure about four hundredths, week-to-week. Surely you didn't back-to-back that system at the track, same day?
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I have 3" collectors into a 3" X pipe and into a pair of dual chamber Flowmaster mufflers with turn downs. X pipe and mufflers weigh 44lbs.
Remove the system and run open headers with a collector extension, add 40lbs of lead and the car runs .10 slower et and 1.5 mph slower.
That was a back to back test, within 45 minutes. I have done this several times.
X pipe and mufflers, would not leave home without them.