Quote:
Originally Posted by CAM....ZL1
Could this possibly make you run a little lean? Can someone that knows give a little insight on this. Would I need a retune?
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I am by means no expert so take this as my uneducated opinion only...
The air is already measured (MAF) regardless of whether it is bypassed or not. So I would think, the computer would measure more airflow (MAF) and then adjust accordingly. If it made a huge change in PSi then I would consider having the tune adjusted just to be on the safe side and make sure you are using all the power available.