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      09-04-2023, 07:34 PM   #23
mdarnold
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Drives: M4 GTS
Join Date: Sep 2023
Location: Columbus, OH

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Quote:
Originally Posted by daveishi View Post
Yep. After my experience I stand by my advice to just dump out the tank when you buy one and start with fresh water and a fresh filter. Took 3 filter changes for me to get all of the residue out of the system so it could start flowing again.
Did you do any of the ISTA tests? When/how did you do the filter changes?

Story: I just bought my GTS a couple of months ago and did a track day 2 weeks ago and it didn't use any water. Pulled a single code, 124015, Water injection, working area: Pressure area too low. Which I hope is just the water filter. I just did my first one and there was a bit of gunk on the bottom of the filter, but not a ton.
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