Archive for the ‘Racing’ Category

Tesla S vs RENNtech tune only E63

Wednesday, February 6th, 2013


Published: Feb 05, 2013

The same Tesla Model S that successfully beat a Dodge Viper in a quarter-mile showdown is back this week going up against a Mercedes E63 AMG.

Instant torque is a wonderful thing yet EVs in general are not popular amongst gearheads and probably never will be. That doesn’t distract from the fact the new Tesla Model S is quite the performance machine. For last week’s installment of Drag Race Tuesdays we saw the Model S successfully beat the Dodge Viper SRT10 on a quarter mile strip. As a result, it set a new record as the world’s fastest production EV.
Now that same Model S is back, this time going up against a RENNtech-tuned Mercedes-Benz E63 AMG. So can the mighty EV repeat its incredible performance from last week? Check out this week’s quarter-mile showdown to find out.

SLR featured in July issue of Mercedes Enthusiast

Thursday, June 21st, 2012

The RENNtech L4p SLR which became the world’s fastest Mercedes with a quarter mile time of 9.68 @ 142.12 mph caught the attention of performance enthusiast’s state side when news broke. Well the record breaking run has also become the talk across the pond and was written up in the July 2012 issue of Mercedes Enthusiast Magazine. We are sure the SLR run will remain a tough one to beat, but we look forward to the challenge and once again beating our own record….stay tuned.

To view the write up, click here:

CLS63 Biturbo 10.79 @ 130.77mph- Fastest Run To Date

Tuesday, May 15th, 2012

From RoadTest TV:

We recently attended the event held at Palm Beach International Raceway on May 6, 2012. This is the 3rd StreetCarDragsevent we attended, and, as before, many amazing cars showed up to race including multiple Corvette ZR1s, GTRs, Vipers, Evos, Camaros and some Benzes. Trophies were awarded for the Fastest American Car, Fastest Japanese Car, Fastest European Car, Best 60 foot time and Best Reaction Time.

The Benz that brought home the trophy for the Fastest European car was RENNtech’s 2012 CLS63 with a stout 10.79 @ 130.77 mph. RENNtech brought out a few of its project cars and gladly accepted our request to strap some of our test equipment into its record setting 2012 CLS63 to get some performance numbers.

May in South Florida is generally warm and humid, and May 6th was no exception. At the time of our testing, the temperatures were in the mid to high 80s with a density altitude of over 2000 feet.  Despite the less than desirable conditions, the acceleration numbers were staggering from RENNtech’s warmed over V8 BiTurbo CLS63 …. as you can see from the data below:

RENNtech        STOCK
0 to 60 mph       3.0 seconds   ( 4.2 seconds)
0 to 100 mph     6.5 seconds   ( 9.2 seconds)
60 to 130 mph    7.6 seconds   (11.4 seconds)

The RENNtech CLS63 has the following mods: RENNtech modified ECU, larger heat exchanger, high efficiency intercooler pump, 100% locking differential, high flow downpipes with 200 cell cats, drag radials and front skinnies. The RENNtech CLS is still equipped with its stock turbos and stock airboxes (for now..), and the car retains all of its stock interior as no weight was taken out of the vehicle.

We also got a chance to log some miles on this car after the event and can say, without hesitation, that the rush of power from the RENNtech mods is eye ball flattening at every RPM.   However, the RENNtech CLS63 is a docile as a stock CLS63 for everyday use.

Tune Only 2012 RENNtech E63 runs 11.15 @ 126.7 mph!

Tuesday, April 17th, 2012

An otherwise bone stock, tune only 2012 Mercedes E 63 ran an incredible 11.15 @ 126.7 mph quarter mile this past weekend at Palm Beach International Raceway. The E63 dynoyed an impressive 578.33 horsepower and 621.93 ft/lbs of torque at the wheels (680 horsepower and 732 ft-lbs of torque at the crank) with the RENNtech tune installed. That is a 100 horsepower gain over stock!

The run was made with the stock exhaust, stock wheels and OEM street tires in 80 degree temps with damp track conditions. Needless to say, we expect quite a bit more out of the new biturbo E63 and will certainly be breaking into the 10′s very shortly.

Stay tuned as we continue to push the performance of Mercedes latest powerhouse.

Here is a video of the run:


Street Car Drags this Sunday

Tuesday, April 17th, 2012









Private Drag Strip Track Rental at Palm Beach International Raceway – April 22th, 2012

Event website and entry list can be found by clicking here:

Palm Beach International Raceway
17047 Bee Line Highway
Jupiter, FL 33478

Date: Sunday, April 22th, 2012
Time: 9:00am – 5:00pm

Cost: $75 per car. Space is limited to 50 cars, register now using the form below.

Spectators: $5, paid at the gate.

Street cars only, no trailered race cars.

We will be giving away a Racelogic Performance box (VBOX) valued at $549 to one lucky racer via a live drawing during the event, register below!

email us at: for any questions.

RENNtech SLR Shatters Its Own Record- Again

Wednesday, April 4th, 2012

The RENNtech modified L4P SLR 777 once again shattered its own world record last week with an astonishing quarter mile run of 9.68 @ 142 mph! This run bested its previous quarter mile time of 9.76 @ 140 mph achieved in January earlier this year.

Further development on the SLR was made after its previous record run in order to extract maximum performance form every aspect of the vehicles power train. Focus was placed on the intake and exhaust potions of the engine with modifications made to the throttle body, fuel delivery and injector setup as well as additional changes to the exhaust header and muffler.

This unprecedented run once again makes the RENNtech modified SLR the worlds fastest Mercedes and ensures this king of the quarter mile will not easily be dethroned.

Here is a video of the the SLR making a few passes and the record run-

9.76 @ 140.8 mph! First Mercedes to break into the 9′s! Worlds fastest Mercedes!

Tuesday, January 10th, 2012

RENNtech powered SLR once again shattered its own 1/4 mile record of 10.29 @ 134 mph (215 kmh), with an astonishing 9.76 @ 140.8 mph (226 kmh) run!

The SLR (L4P SLR 777) features full compliment of RENNtech performance and exterior modifications in addition to a full Mansory Renovatio body kit; making this SLR not only beautiful, but deadly quick. This vehicle was also the December 2011 cover vehicle of Dupont Registry and part of this years SEMA show.

The 9.76 1/4 mile time officially makes the SLR 777 not only the fastest Mercedes Benz on the planet, but also is the World’s First Mercedes Benz powered Mercedes to run 9s in the quarter mile.

Here is a video of the run:

Now onto breaking into the 8′s…….

CLS63 Biturbo New Record- 10.98 @129.40 mph!

Monday, January 9th, 2012

RENNtech’s 2012 CLS63 broke the 11 second barrier by running the 1/4 mile in 10.98 @ 129.40 mph (208 kmh)! This officially makes it the world’s fastest CLS63.

Our latest run surpasses our previous 1/4 mile time in the same vehicle with a previous record of 11.21 @ 126 mph with only a tune and drag radials posted last month. Since then we have added a RENNtech 100% locking limited slip differential and an in development performance exhaust modification in addition to our performance ECU upgrade. The new biturbo engine now makes 688 crank horsepower and 765 lb/ft of torque; transforming the CLS63 into an all out road rocket!  The vehicle made the pass in S+ (Sport Plus) and made the run from idle without launch control activated.

To view our ever expanding product line for the new Mercedes biturbo engines, visit our webpage by clicking here:

CLS63 11.21 @126.3 mph

Monday, December 5th, 2011

2012 GTR vs.RENNtech 2012 CLS63

December 2nd, 2011 by Road Test TV

We finally got a little cooler weather here in South Florida (high 60s – low 70s) and had the opportunity to make a few passes down the quarter mile in another 2012 RENNtech CLS63 at Palm Beach International Raceway.

To give some background, for 2012, AMG has upped the ante with the CLS63 by adding a new direct injected BiTurbo V8. The base 5.5 liter V8 Bi turbo is rated at 518 horsepower and 516 pound-feet of torque at the crank. In addition, AMG offers a “Performance Package” for those who want more. The “Performance Package” raises the boost on the turbos from 14.5 psi to 18.8 psi. As a result, horsepower jumps from 518 to 550 and torque from 516 lb-ft to 590.

We found out that Mercedes Benz was very conservative with its horsepower ratings, because on a Dynojet dynamometer at RENNtech, the new 5.5 liter V8 BiTurbo in base form made 556 horsepower and 550 ft-lbs of torque (473.24 horsepower and 468.22 ft/lbs of torque at the wheels). Note, this was the base CLS63 that is rated at 518 hp and 516 ft/lbs of torque. But this motor makes some serious power with a tune. With a RENNtech tune only, the base CLS63 made 669 horsepower and 734 ft-lbs of torque (569.13 horsepower and 624.94 ft/lbs of torque at the wheels).

Back to the dragstrip…… So, during the run in the video below, we had the opportunity to line up against a 2012 Nissan GTR. As everyone knows, not too many vehicles can hang with a Nissan GTR with its eyeball flattening 0 to 60 times. However, the big 4400 lb, 4 seater 2012 CLS63 more than held its own against Godzilla, running an amazing 11.21 @ 126.3 mph (203 kph) to the GTRs 11.11 @ 124 mph (200 kph). Enjoy.



RENNtech BMW X5/X6M Runs 11.99 @114.05mph- TUNE ONLY!

Monday, November 21st, 2011

The RENNtech ECU upgrade is the ultimate tune for the BMW X5/X6M! Our tune allows the SUV to run an astonishing 11.99 @ 114.05 mph in the quarter mile. Our ECU also alows the M SUV to accelerate from 0-60 mph in 3.75 seconds and 0-100 mph in a mere 9.2 seconds!

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 tuning software and approach for BMW is completely unique and independent from our Mercedes tuning program.

RENNtech tuning software for BMW offers significant gains in performance and throttle response without sacrificing your daily driver BMW’s reliability.

By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the top speed limiter, improving engine cooling and modifying boost mapping for turbo charged vehicles; RENNtech performance software unleashes your BMW’s true potential.

Stock Performance BMW X5/X6M (E70/E71 S63B44 V8 Biturbo M)

  • 555 HP @ 6500 RPM / 500 TQ @ 3600 RPM


  • 625 HP @ 6500 RPM / 600 TQ @ 3600 RPM

Visit our website for additional information and pricing by clicking here: