thinking of doing this, is there any down side to this mod. What happens if you need to take it to a shop? the up sides are better response,better mileage, more power?
As far as taking it to a shop, It's one of those "behind the scenes" type mods (like the in tank ones)that no one can see, but it's there. Without pulling the inner fender, you can't see that the IDM has been futz with. You are not trying to hide anything, just make improvements. This mod has been tested by many and is still going strong.
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