2010+ Porsche Panamera 970 Euro Style Rear Roof Glass Spoiler (painted) on 2040-parts.com

BMW releases power kits for the 135i and 335i models

BMW 135i and 335i models can now be retrofitted with two new performance power kits for more muscle and speed. The Version 1 kit has new engine software to optimize performance, while Version 2 tacks on an auxiliary water cooler and radiator fan to keep the engine from getting feverish during extreme driving. With either kit, horsepower increases by 20 hp, to 320 hp, on both models, and torque jumps to 332 lb-ft for models equipped with automatic transmission.

One Lap of the Web: The lost F-Type, a velvet Panamera and Lutz on being king

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Long before there was a Jaguar F-Type, there was the XJ41, originally conceived to be a lightweight successor to the XKE.

2015 Chevrolet Tahoe PPV will look mean in your rearview mirror

We weren't particular surprised by Chevrolet's unveiling of a Tahoe Police Concept Car at SEMA, as it seemed a perfectly natural use for the truck, and we weren't surprised today when news broke that the Tahoe was going to be offered in law-enforcement spec to police agencies around the country. With stiff competition from the Dodge Durango and the tremendously popular Ford Explorer PPV, a cop-spec 2015 Chevrolet Tahoe, makes perfect sense. The Chevrolet Tahoe PPV will debut with the new fuel-efficient 5.3-liter direct-injection V8 engine, which produces 335 hp and 383 lb-ft of torque.