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With 333 HP and 325 lb-ft of torque on tap, the 3.0 liter TFSI engine found in the current Audi A6 sports sedan is definitely no slouch- but 333 HP is just a start for Audi’s supercharged V6.

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Mercedes’ turbocharged engines produce smooth, understated power from the factory and have been tuned to simply staggering degrees of performance by companies like AMG, Brabus, and (of course) Speedriven. The most extreme of these tuned turbo Benzes have a very distinctive sound thanks to the use of aftermarket blowoff valves- now, however, you can upgrade the look and sound of your biturbo Mercedes-Benz with these billet aluminum blowoff valves from Speedriven.

Speedriven’s billet aluminum blowoff valves are machined from aircraft-grade material and are direct, bolt-on replacements for the factory BOVs (which are made of plastic). Once installed they offer superior durability compared to the factory units, while also serving...

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Made from high-quality stainless steel and designed to be direct replacements for the factory components, these new, lightweight, high-flow performance downpipes from Speedriven deliver serious performance gains without compromising the sound quality of your V12 Mercedes.

BUY IT ONCE

Speedriven developed these downpipes to provide a significantly more exhaust flow than the factory units. This improved flow delivers a noticeable increase in horsepower, torque, and throttle response across the RPM range- but there’s more to these downpipes than a simple, “better than stock” upgrade. Speedriven developed these downpipes to provide sufficient airflow for everything from stock turbo builds to billet-wheel turbos to our most ...

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Earlier this week, Chicago-based tuning firm Speedriven added performance and tuning products for the classic W211 chassis Mercedes-Benz E55 AMG to its Product Guide. And, yes, Speedriven really hadn’t offered performance products for the E55.

Not for a while, anyway.

“By the time Speedriven was founded in 2009, the 55s were already out of production,” explains Speedriven’s Jo Borras. “You have to realize, too, that the 55s made 469 HP from the factory. They were always fast, and even a simple ECU tune and pulley could performance into true supercar territory. Because of that, almost every E55 AMG owner bought the basic, bolt-ons and was satisfied with the 500-or-so WHP they got. Beyond that, they were all getting tuned, and it seemed like there were a half dozen shops offering the same thing. We figured they had a head start, and we weren’t going to beat them to the next big advancement on the platform, so we eventually just dropped the platform from our Product Guide.”

That was in 2009. More than six years later, however, most E55 AMG owners are still buying the same bolt-ons and getting about the same results (505-535 WHP), regardless of who built their cars. It seemed like the platform had hit a dead end. That’s when Speedriven decided to take a second look at the M113K.

Speedriven E55 AMG M113K Built Engine

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“The single biggest obstacle to making big power with the M113K is the factory pistons,” explains Jo. “They start to break down at around 575-585 WHP. If you want more than that, you need to upgrade the pistons to something like the pistons from the SLR McLaren. Those require a perfect Alusil cylinder lining, though, and that’s where things start to get expensive.”

The goal was to keep costs under control but still maximize performance potential. To that end, Speedriven’s basic M113 engine build starts with a full blueprinting. Then, pearlitic cylinder sleeves are installed to reinforce the block and remove the need for specialized coatings on the pistons. The factory pistons are replaced with more robust, forged pistons that offer many of the power and performance benefits of the SLR pistons, thanks to a similar skirt design.

The crankshaft is then polished, the rotating assembly balanced, and the heads are resurfaced and polished before the engine is re-assembled. The resulting reinforced M113 is now capable of handling much more extreme levels of performance.

Speedriven E55 AMG M113K Supercharger Upgrade

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“Building up the M113K block and internals dramatically increases the performance potential of the engine,” continues Jo. “That leaves E55 AMG owners with a new dilemma. Before, the supercharger could outperform the engine. Now, the supercharger can’t keep up. You can stack pulleys (using a smaller compressor pulley and a larger diameter crankshaft pulley), but that’s a lot of parasitic loss and a lot of heat, too. It’s not efficient. You need a bigger blower.”

Speedriven’s upgraded supercharger package uses a larger Whipple blower and drive unit, with intake runners and snout CNC-machined from aircraft-grade billet aluminum. Keeping things cool is a larger, more-efficient, single-pass intercooler that nestles in between the M113’s cylinder banks.

With more displacement and more efficient heat-management (as well as larger fuel injectors, included in the PKG), the built M113 equipped with Speedriven’s supercharger upgrade PKG is ready to deliver some serious horsepower and torque figures.

Speedriven Built Transmission

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Getting all that newfound power to the ground effectively is Speedriven’s proven “built” 722.6 (NAG1) transmission. With additional upgraded clutches, reinforced steels, new seals and gaskets, and a modified valve body, this transmission is more than capable of handling anything a built, Whipple-blown E55 AMG throws at it.

In addition to handling more horsepower and torque without slipping, Speedriven’s built transmission delivers quicker, firmer shifts for superior E/T and MPH performance- especially when fitted with one of Speedriven’s billet aluminum transmission pans for superior fluid capacity, cooling, and durability.

Speedriven Standalone ECU

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“The problem, basically, is that you’ve built yourself a supercar at this point, but now you’re stuck with a factory engine computer that’s fifteen years old,” explains Jo. “Maybe older, given the development cycles of ECUs. So, you have a stronger engine, a bigger blower, and a drivetrain that’s ready for anything. But the ECU has limits. It’s going to limit how much boost you can run. It’s going to limit the kind of launch you’re going to get. More than just limit things, the factory ECU simply can’t do a lot of things. Those limitations meant that some of our project cars- like the duPont REGISTRY Limited Edition Audi R8 and the upcoming “Ultimate” Mercedes SL- just couldn’t happen unless there was a workaround. The standalone is much, much more than that.”

The standalone solution Speedriven has been developing for their Mercedes-Benz and AMG customers completely replaces the factory computer, taking over the many demands of the cars’ engine and transmission while giving the tuner full control over all of the car’s systems. In addition to delivering the complete control necessary to push the envelope of Mercedes-Benz performance tuning, the standalone allows tuners to develop features for these cars that they’ve never had. These range from exciting tuning features like launch and drift control strategies to more mundane features like flex-fuel sensing and pit lane speed limiters.

Going “all-in” on an E55 AMG with everything described above will net owners a level of performance on par with modern hypercars. That’s in addition to a zero-mile drivetrain thanks to the rebuilt engine and transmission. New brakes, belts, and a fresh suspension, and an 800+ HP super-sedan could be yours for less than the price of a V8 muscle car.

Speedriven’s comprehensive suite of performance upgrades for W211-chassis E55 AMG Mercedes-Benz is available now- with many of these packages and products also available for CLS55 AMG, SL55 AMG, and G55 AMG models, as well. Call us at 847.485.8126 or email info@speedriven.com for more information.

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This past weekend, with the snow falling in Chicago and temperatures dropping below freezing, the Speedriven crew rolled a relatively stock-looking Audi R8 into a trailer for a trip to Bradenton Motorsports Park in sunny Florida. Once there, the guys got to work. They unloaded the car, lined it up, and quickly ran a 10-second quarter mile ET.

The second pass, a 10.18 second run at over 142 MPH, was a new Audi R8 1/4 mile record. Even so, it was just the start for Speedriven and Marko D., the car’s owner.

“I couldn’t live with myself if some kid with three different kits on his LS motor pulled up to me at a light and I had to ask him to roll alongside me in my $200,000 ‘exotic’ until we got to the next pole and then hit it,” says Marko D., the owner of Speedriven’s latest Audi R8 build explains. “I’d rather set the car on fire. Then hang myself. Then set myself on fire, too. I’m just not doing it.”

To make sure their client didn’t need to go to such extremes, Speedriven took Marko’s Audi R8 and added their “L1” twin-turbo package. That consists of a pair of highly-responsive turbos, a set of purpose-built intercoolers and intakes, an upgraded fuel system, and a custom, free-flowing exhaust system to the otherwise stock V10. Those upgrades were good for more than 1100 HP on race gas- but there’s a lot more to winning a drag race than just horsepower.

To that end, Speedriven modified the Audi R8’s rear suspension to maximize weight transfer to the rear of the car- where they’ve fitted a set of impressively serious-looking Mickey Thompson drag radials and custom Bogart Racing bead-lock wheels.

Once the suspension and traction control were dialed in following a series of hard launches, it was time to get started.

The first was marred by a bad shift, signaled by a loud pop that echoed across the track. Even so, it was a 10-second pass. Trying again, and another bad shift- but this one was quicker still: 10.18 @ 142.5 MPH. Whatever else happened, the Speedriven Audi was proving to be a consistent 10 second car, and was already a record-breaker.

On the next pass, everything came together for Marko’s R8. It blasted off the line, setting a seriously quick 1.4 second 60′ time on its way to a 9.722 second pass at 143.28 MPH.

“I couldn’t be happier with the end results,” said Marko, after beating his “target time” by more than a full second. “The car looks almost totally stock, and runs awesome. Every time I drive it it feels faster than I remembered.”

You can see a video of the 9.722 pass at the top of the page, and check out a few trackside photos of this Speedriven-built, twin-turbo Audi R8 V10 in the gallery, below, along with the time slip. For more information and package pricing, visit Speedriven’s Audi R8 product page or email Speedriven directly about the R8 Drag Pak.

Speedriven Twin-turbo Audi R8 Record Run

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Last week, we introduced you to the latest Speedriven-tuned CL600 to roll out of our shop in Palatine, Illinois- and, while we showed off the car’s dyno performance and speculated that it would be a ten-second car, we didn’t have the time slips to back it up. Luckily, the car’s owner wasted no time in getting his 830+ WHP Mercedes-Benz CL600 onto a track. The result: Speedriven set a new 1/4 mile record.

Twice.

With back-to-back runs of 10.576 and 10.573 with the car’s traction control kicking in, the big, ethanol-fueled Mercedes-Benz proved itself to be both incredibly fast and incredibly consistent in real-world conditions. Either of those times would have been good enough to claim the CL600 record, but it’s the slower 10.576 second time- with the Speedriven CL600 crossing the line some eleven MPH faster than the next-quickest CL600 on record- that really got our attention!

You can see that record-setting run in the video, below, and contact us at our Palatine, Illinois location by using this link or the contact information at the bottom of the page.

Speedriven CL600 Blasts to 1/4 Mile Record

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At more than sixteen feet long and weighing nearly five-thousand pounds the W215 series Mercedes-Benz CL coupes were always going to have more in common with marine mammals than they were with sporty little two-seaters like the Chevy Corvette or Porsche Turbo. At least, that’s how it seemed before 2003, when Mercedes gave the big CL a 493 HP twin-turbocharged V12 engine that blasted the two-and-a-half ton land whale from 0-60 MPH in less than five seconds on the way to a sub-fourteen second ¼ mile time … which, you know, is fine.

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