Product | BD Performance

APR is pleased to present the ultimate ECU Upgrade for the Audi B8 and B8.5 S4 & S5 3.0 TFSI V6 available thought the OBD-II Port via APR's Patented DirectPort Programming!

After months of long nights and many hours of testing, developing and more testing, we’re pleased to offer you an ECU recalibration that is second to none. APR’s extensive research and development provides you with a powerful ECU upgrade with no loss of drivability or reliability. Expect faster acceleration, improved throttle response and more power across the entire power band.

APR’s 3.0 TFSI V6 ECU Upgrade is an expertly recalibrated engine control strategy that primarily remaps the engine's operating parameters, within the factory ECU, to provide smooth and reliable power as if intended by the OEM. APR’s ECU Upgrade is developed to work within the OEM and Tier 1 Supplier specifications for engine component stress tolerances and performance specifications and is thoroughly track tested through APR Motorsport's Grand-AM and World Challenge professional racing efforts. Available in octane-specific variations, APR’s calibrations allow you to take advantage of fuel quality available in your area. APR’s patented EMCS functionality puts the control of your engine’s operation at your fingertips and allows for additional features and options to be installed to your OEM ECU.

APR Stage I and Stage II+ ECU Upgrades

engine

The APR Stage I ECU Upgrade gives you higher peak numbers of 362 horsepower and 345-ft. of torque measured at all 4 wheels, but also gains of up to 77 all wheel horsepower and 57lb-ft are available throughout the power band!

For those demanding more torque, The APR Supercharger Pulley Upgrade is the answer. Spinning the supercharger faster increases air flow and effectively doubles the low-end gains of Stage I. The gain in torque is felt immediately, but the results are present from beginning to end adding up to 80ft-lbs and 108 horsepower at all four wheels! Stage II+ Software is included as a free upgrade for APR Stage I customers with the purchase of an APR Supercharger Pulley Upgrade.

APR’s ECU Upgrade is the best power per dollar modification for the new 3.0 TFSI V6 and gives it just the extra edge these cars lack from the factory without pushing the limits. With factory-like smoothness and drivability, APR’s ECU upgrade will fill the void in an otherwise excellent car.

Available Fuel Grades: 95, 98 and 104 octane (RON).
Requirements: Stage I requires no hardware upgrades. Stage 2+ simply requires an APR Supercharger Pulley Upgrade.

rabbit Acceleration Enhancements:
Beyond power and torque enhancements, APR’s Calibration Engineers were able to increase the acceleration rate of the S4 and S5 through other calibrations changes. Ignition delay is reduced resulting in a more responsive pedal without altering overall throttle sensitivity.

vmax Speed Limiter:
APR’s ECU upgrade increases the vehicle's top speed limiter for blistering sprints around the track or across the Autobahn without the speed limiter shutting down your fun!

eco Increased Fuel Economy:
APR’s Calibration Engineers paid close attention to several parameters directly related to fuel economy, especially while cruising at highway speeds. Depending on your driving style and fuel quality, you may see better miles per gallon!

vmax Motorsport Rev Limiter:
APR’s Motorsport Rev Limiter allows the engine to reach max RPM without the ECU slowing down acceleration several hundred RPM earlier. The result is more power to redline and a definable redline feeling as seen on Audi Quattro GMBH vehicles such as the RS4, RS5 and R8.

Left Foot Braking:
APR's Left Foot Braking feature allows more control over the vehicle’s throttle. The factory equipped S4 and S5’s throttle input is disabled while pressing the accelerator and brake at the same time. Left Foot Braking, a common motorsport driving technique, allows the driver complete control over the vehicle’s throttle and braking system, which may give the S4 and S5 the edge it needs at the track. As is with all features APR adds to the ECU, this feature may be removed upon request.

APR Stage I ECU Upgrade Calibration Report (Measured at All 4 Wheels)
	Stock 95 Octane	Stock 98 Octane	95 Octane RON	98 Octane RON	104 Octane RON
All Figures Measured at All 4 Wheels on a 2010 B8 S4 6-Speed Manual.
Rev Limit	7200 RPM	7200 RPM	7200 RPM	7200 RPM	7200 RPM
Speed Limit	Max Speed Limited	Max Speed Limited	Unlimited	Unlimited	Unlimited
Peak Power	319 AWHP	327 AWHP	353 AWHP	362 AWHP	385 AWHP
Peak Torque	308 AWTQ	327 AWTQ	336 AWTQ	345 AWTQ	355 AWTQ
Max HP Over Stock 95 Octane			79 AWHP @ 7100 RPM	85 AWHP @ 7000 RPM	109 AWHP @ 7100 RPM
Max TQ Over Stock 95 Octane			58 AWTQ @ 7100 RPM	64 AWTQ @ 7000 RPM	81 AWTQ @ 6950 RPM
Max HP Over Stock 98 Octane				77 AWHP @ 7100 RPM	103 AWHP @ 7100 RPM
Max TQ Over Stock 98 Octane				57 AWTQ @ 7100 RPM	76 AWTQ @ 7100 RPM