The SMARTY S-67 is not guaranteed to be undetectable.Here's some of the latest news on the S-67:
The VGT levels are as follows:1) stock ( makes for a somewhat sluggish throttle )2) The Default one, good compromise between responsiveness and MPG3) For Mileage! Less responsive than 2 but better for mileage ( Should be used for towing heavy )4) As responsive as possible without creating too much back pressure.Mileage will suffer a little with this one!
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