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2013 Dinan S3 BMW 550i

Steve Dinan has been enhancing BMW models since 1979. But don't throw his company into the ring with the dozen or so other tuners who tweak, tinker and piggyback upgrades on the famed German marque. Dinan is a tuner, but it's also an engineering firm that writes its own software, builds its own parts and then backs everything it does with a factory-grade warranty. That sort of fastidiousness comes at a price, but most of its customers - including the powerhouse of BMW Motorsport - rely on Dinan to help them come out on top.
In stock form, BMW's 550i is a formidable four-door with a twin-turbocharged 4.4-liter V8 rated at 400 horsepower and 450 pound-feet of torque. While those figures allow it to run with quick company (0-60 in 5.0 seconds, according to the automaker), Dinan puts the sedan's kettle on full boil with its S3 package. Starting with the engine, the performance engineering firm bolts on larger turbochargers, air-to-water intercoolers, a trick strut tower brace cold air intake, a quad-pipe free flow exhaust and its own engine management software. Pump in some premium fuel, and the result is 542 horsepower and 587 pound-feet of torque. Power is sent through the stock eight-speed automatic to a limited slip rear differential (Dinan will upgrade xDrive all-wheel drive models, too).
The Dinan S3 also features and extensive suspension upgrade that includes new front camber arms and low compliance rear control arms (engineered to reduce understeer and improve turn-in). The stock dampers are retained, but new bump stops are installed along with new springs. Overall, the car rides about a half-inch lower than stock to improve roll rate. To reduce unsprung weight, forged 20-inch HRE Performance wheels are fitted at all four corners (wearing Michelin Pilot Super Sport tires - 275/35ZR20 up front and 295/35ZR20 in the rear). Lastly, the company remaps the factory Electronic Damper Control (EDC) software with its own Dinan Shockware to work in conjunction with the new enhancements.

Recharge Wrap-up: Hyundai/Kia fined $755M for exaggerated MPG ratings; BMW dealers want more i8s

The fine against Hyundai and Kia has grown to $755 million for overstating fuel economy ratings. $360 million of that fine comes from the EPA for violation of the Clean Air Act: $100 million is a civil penalty, $210 million is a forfeiture of greenhouse gas credits and another $50 million will pay for independent fuel economy audits on future models. The remaining $395 million is a settlement for customers who purchased the affected vehicles. A slew of 2011 to 2013 models were found to have fuel economy ratings overstated by one to six miles per gallon. Customers will be awarded funds to offset the unexpected fuel costs or to put toward a new Hyundai or Kia vehicle. Read more at Hybrid Cars. BMW dealers are awaiting details on new dealership standards - and BMW i8 models for their showroom floors. According to BMW National Dealer Forum Chairman Steve Late, BMW dealers are anxiously waiting to see what sort of updates they'll need to do to get in line with BMW's Future Retail 2016 program. As for the new EVs, Late says that the BMW i3 sales were slow to start, but that once people learned more about it, "wham, bam, it is taking off." The i8 shortage is a bigger problem: "I was allocated three for 2014, and I have a waiting list of 47 people. This year, maybe I will get eight or 10, and I still won't be able to fulfill them." Still, Late says he won't sell the cars at an upcharge. Read more at Automotive News. Opel is reportedly planning an electric version of its Karl hatchback. According to German automotive magazine Autobild, Opel will begin selling the diminutive Karl EV by the end of 2018. The electric car will offer a driving range of about 93 miles. The gasoline-powered version is expected to begin deliveries this June. Read more at Automotive News Europe. PSA Peugeot Citroen says it will keep its Hybrid Air program alive as it looks for a cost-sharing partner. Hybrid Air technology uses a compressed air hybrid system to improve fuel economy as we saw in the Peugeot 208 Hybrid Air concept. A French newspaper reported that Hybrid Air won't make it to commercialization, and that the program's team of engineers has been reduced. A PSA spokesperson confirms the change to the program, saying, "We are now waiting for another partner to help us begin the production stage." Read more at Automotive News Europe. Related Video:

Autoblog Podcast #387

Episode #387 of the Autoblog podcast is here, and this week, Dan Roth, Steven Ewing and Michael Zak talk about more General Motors recalls, upgrades and a diesel for the 2015 Ford Focus ST, and the BMW M235i scoring ahead of the Porsche 911 and Chevrolet Corvette Stingray in Consumer Reports testing. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #387: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: GM recalls 8.4M more cars in North America Ford Focus ST upgrades and diesel CR says M235i is better than 911 In the Autoblog Garage: 2014 Jeep Grand Cherokee EcoDiesel 2014 Honda Accord Coupe V6 6MT Long-Term 2015 Subaru WRX 2014 Subaru XV Crosstrek Hybrid Hosts: Dan Roth, Steven Ewing, Michael Zak Runtime: 01:35:26 Rundown: Intro & Garage - 00:00 GM Recalls - 26:26 2015 Ford Focus ST - 41:56 BMW M235i - 50:24 Q&A - 59:16 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Government/Legal Podcasts BMW Ford GM Honda Jeep Subaru Safety Diesel Vehicles Performance bmw m235i