PMAS only in my opinion.
Anytime you don't run an EEC tuner of some sort you are leaving power on the table and some mpg. Sure the A9l has a lot of forgiveness when it comes to playing with the fuel press and timing but it still not achieve maximum results in power and economy.
I also recommend the Tweecer R/T for best bang for the buck
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2009 Porsche Carrera S
2008 ///AMG C63.. Eurocharge Tune. RIP
2019 AMG GLC43..wife's
03 F250 SD.. Edge Evo, AFE Stage 1 CAI
08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's
01 Cobra vert... wife's
I need a new toy
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