ECU reflash Max Spool 16 CAI Stock Muffler edition (SM) 255HP+
This is most powerful stock muffler reflash available. It works optimally with a Cold air intake but can run without one (stock air box)
Makes over 255HP.
We have been testing this map for months and finally releasing it.
The testers have had rave reviews about top speed acceleration and excellent response.
* we recommend our aftermarket blow off valve for best performance.
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