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      07-08-2021, 09:56 AM   #14
hellokitty
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Drives: '17 M3 ZCP DCT
Join Date: Jul 2010
Location: Southern California

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Quote:
Originally Posted by MINERALWHITE_F80M3 View Post
Quote:
Originally Posted by hellokitty View Post
Do you have a upgraded front mount heat exchanger?

I did a csf front mount exchanger but kept my stock top intercooler.

Before the heat exchanger, I was running 20 above ambient like you. After, my best was 13 above ambient.

I would run the pump again to make sure no air, then switch to a lower antifreeze mix with more distilled water and add redline water wetter. Do this first and check again before touching your top mount exchanger…
Negative still running the oem heat exchanger!

Ill run the pump and have a jug of distilled to top off if needed and ill add the water wetter.

Ill report back soon, thanks!
Ok that makes sense. The power gains primarily come from an upgraded heat exchanger. The top mount is really a durability modification.
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