Install the check valve ASAP. Definitely before you start your tune.Gotcha, so is it a big deal that we don’t have that in right now? And how long does it take for etunez to get back to people cause i purchased the ultimate tune and turbo add on July 9th and haven’t heard anything
Also, those basemaps are ok for startup and checking things over but i would not be going into boost or doing any WOT until the car is properly tuned.
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