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      01-05-2022, 05:35 PM   #4
DrivenAgain
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Drives: 2018 BMW M5
Join Date: Dec 2020
Location: MD

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Originally Posted by m4h2o View Post
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Originally Posted by DrivenAgain View Post
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Originally Posted by m4h2o View Post
Anyone in this forum have these?
I knew about high flow but just recently found out about ultra high flow. $2799 for the set. Curious what difference these make compared to regular high flow
my guess is they are the same, I dont know that they offer two styles. Dont get too caught up in a name, find one that fits they all do the same thing. "Records" have beet set with both 3" and 3.5" You can also still make a ton of power just removing the secondaries. I run a 5.93 60-130 with stock uppers.
Im looking to do stage 2 tune so i need to change the primaries but dont want the smell.
I was going to keep the secondary factory because i dont want it annoyingly loud. From what ive heard there is very minimal gain in doing catless secondaries.
You don't need to change primaries to do "stage 2" If you remove the secondaries you get zero smell and turbo spool.
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2018 M5 Singapore Grey CCBs/Utku Noa E45 ECU/xHP TCU/PG-Intake/PG-Lower Downpipes
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