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I always say the most potential out of a tune comes out after all the other bolt on mods are already done. I know the AA tune takes into account all the different mods you have and makes everything work well together. That being said for the NA motors gains are there, but imho not necessarily worth it if that's all you plan on doing, it really all comes down to you. On a FI motor, then yes tune only is definitely worth it.
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