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      07-13-2023, 12:52 PM   #4
alohasurftoad
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Drives: 440i gran coupe w/mppsk
Join Date: Apr 2015
Location: hawaii

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Quote:
Originally Posted by evanrs123 View Post
Yea I'm running stock pops/burbles I don't have a tune for it
ahh ok. imo, "you get what you pay for", especially with vrsf. both Fabspeed and AA are quite expensive. Fabspeed uses HJS Euro catalyst and Active Autowerke uses GESI. even without tune, both are guaranteed not to trigger a CEL, the GESI being also EPA registered and OBD2 compliant. i believe the AA is slightly cheaper.
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