RennTech ECU Upgrade 2015-2017 Mercedes-Benz S 65 AMG BiTurbo C217

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RennTech ECU Upgrade 2015-2017 Mercedes-Benz S 65 AMG BiTurbo C217

Subtotal: $3,390.15

Not sure it fits? Text us your VINSee all fitment

Vendor: RennTech

SKU: 54.217.S65BT

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Overview

The 2015-2017 S 65 AMG BiTurbo responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 6.0L M279 twin-turbo V12, so the extra power arrives across the whole rev range without giving up everyday drivability. RennTech rates the S 65 AMG BiTurbo at up to 670 hp and 840 lb-ft with this upgrade, a gain of 49 hp and 102 lb-ft.

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Features

Loaded through the RennTech HHT hand-held tuner via the OBD2 port, no ECU removal
The HHT stores the tuned and the factory file, so you can switch back to stock any time
Revised ignition timing, throttle mapping, air-fuel ratios and boost control
Gains across the entire rev range, not just at peak
Developed on RennTech's own dyno and road tested
Keeps factory-like drivability and reliability for daily use

What is included

RennTech calibration for your car
Delivery as listed by RennTech for this model (HHT tuner or ECU flash)

Specs

Part number	54.217.S65BT
Engine	6.0L M279 twin-turbo V12
RennTech rated output	670 hp / 840 lb-ft
Gain (RennTech)	+49 hp / +102 lb-ft

Fitment notes

For the S 65 AMG BiTurbo (C217), 2015-2017 as listed by RennTech. Please include your VIN with the order so RennTech can confirm the exact application. Check the fitment table before ordering, and contact us if your car differs.

Fitment

Make	Model	Chassis	Year	Engine
Mercedes-Benz	S 65 AMG BiTurbo	C217	2015-2017	6.0L M279 twin-turbo V12

Fitment

Year	Make	Model
2015–2017	Mercedes-Benz	S65 AMG

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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