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Have a new G63 coming in anyday now and upgrading to 22" Wheels/tires. Anyone running 305/45/22 tires?

Also Renntech or Weistec ECU tune? Weistec seems to put out more power.

Thanks,
 

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Below is the info on our ECU Tune for the G63. If you have any questions I can help with please let me know.

RENNtech M157 Biturbo ECU Upgrades are TÜV approved!

Our proprietary ECU upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.

Our ECU tune offers the biggest performance gains on the market; increasing performance from 536 HP and 560 lb/ft torque, to an astonishing 635 HP and 620 lb/ft at the crank! This allows the M157 engine to run the quarter mile in an impressive time and dramatically improves 0-60 mph times.

G 63 (W463) M157 Bi Turbo-Stock Performance:
536 HP @ 5500 RPM; 560 LB-FT @ 4800 RPM

Modified Performance:
635 HP @ 5500 RPM; 620 LB-FT @ 3800 RPM
 
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