Stillen Supercharger reliabiity

irondoc

The car went back to IPS over the weekend to sort out the stalling issue. The shield that covers the Air flow sensors had to be modified to fit the 2013, but when put in place the stalling was nearly completely gone. IPS also slightly modified the tune to increase fuel flow at idle. The car runs perfectly now - no stalling. I am very pleased.
Of note my last tank of fuel was 15.85 gallons topped off. I got 290 miles out of that tank The trip computer read 43mph average.
The trip computer also read 28mpg for that tank, but 290/15.85 = 18.3 mpg.
So don't trust your computer to tell you your mpg with the Stillen SC in place, it way overestimates.

Chuck33079

It's basing its calculations on a smaller set of injectors. Any time you change the injectors you throw off the mpg reading. I get around 18 mpg combined driving and my display shows almost 30 mpg. I just switched the display to outside temperature. I'd love it if someone figured out how to reprogram the car to account for the larger injectors so I can have it work again.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent