Wastegate dump?
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I didn't have time on the dyno to try it both ways so I just ran it to the exhaust. New numbers are in this post.
https://www.performancetrucks.net/fo...d.php?t=461333
https://www.performancetrucks.net/fo...d.php?t=461333
#17
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With my 347/78mm setup I had a 3" DP into a 4" Jegs Duramax system all the way out the back. Even with a cutout before the 4" it spooled no faster or made any more power than through full exhaust... That 4" I had FLOWED some air. Plus going from the DP to the rest of the exhaust there was a low pressure arear that I believed to help scavenge gasses and helped spool and overall tq.
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