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Old 02-03-2014, 06:35 PM   #13
mad_sb
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Quote:
Originally Posted by Hawaiian View Post
I have all of those except for possibly an untuned header dyno. I'm just getting to work however so I won't be able to get to those until later.

Maybe some independant tuners with no ulterior motives can chime in. @mad_sb @jamesm @JuniorAWD
I saw similar gains to yours with my fa20 catted long tube, eliminated the dip and made an additional 10 - 15 whp up top on pump and e85. I don't have plots though... just cell phone pics of the graphs somewhere.

I'm sure there are gains from removing the cat and keeping otherwise stock configuration, but a properly designed header should make more power than stock with or without a cat.
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