BMW’s North American division decided to give some “power to the people” by releasing of two performance packages for owners of the BMW 135i and 335i models.
The Version 1 Power Kit, which is also available for X6 crossovers produced up to April of 2010, is simply an ECU reflash that boosts horsepower from 300 to 320. It also raise torque to 332 ft.-lb. with an automatic transmission or 317 foot-pounds with a manual or DCT transmission. This version of the Power Kit was first introduced on the 335i BMW Performance Edition model (announced in July, 2011). The new Version 1 Power Kit kit may be dealer installed or port installed on a new car, being priced at $599.
The Version 2 Power Kit comes with the same engine performance software as Version 1, but it will get you an auxiliary water cooler and an enhanced cooling fan to cope with the engine’s added power. While Version 1 is more appropriate for street use, Version 2 is designed for extreme driving. This kit starts from $1,199 excluding installation.
Finally, we have to mention that the kits come with BMW North America’s limited warranty and can be retrofitted using the Port Installation Program or at BMW centers. Modified vehicles retain the original emission certification, BMW limited warranty and fuel economy ratings, but Power Kits should only be installed on 135i and 335i vehicles equipped with option code S840 (increased top speed limiter – which includes an additional oil cooler).
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