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Rated by Mercedes-Benz: 503 HP @ 5
CLASS S LONG (V 220) 280 [2 Filters Required] (HP: 204 | Year: 98 > 05)
We were able to give the otherwise quiet Turbo a sonorous sound impression
ECU+ Upgrade | Up to 669HP / 734TQ | Gains: +106 HP / +140TQ
) (HP: 306 | Year: 10 > )
RENNtech ECU Upgrade Z4 35iS E89 (2008-2012 N54B30to) jaguar-xj--351---2009-2019--esr9874497 Rated by Mercedes-Benz: 503 HPRENNtech ECU Upgrade Z4 35iS E89 (2008 2012 N54B30to). Up to 420 HP + 435 TQ. Gains: +100 HP & +103 LB FT Our proprietary BMW ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary
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