RennTech HHT ECU Upgrade 2003-2006 Mercedes-Benz CL 65 AMG C215

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Brand: RennTechSKU / Part #: 54.215.CL65

Regular price: $1,891.50
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RennTech HHT ECU Upgrade 2003-2006 Mercedes-Benz CL 65 AMG C215

Subtotal: $1,891.50

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Overview

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2003-2006 CL 65 AMG is the result of in-house dyno development on this engine. Timing, throttle, air-fuel and boost tables are revised as one calibration, so the car pulls harder everywhere while staying a comfortable daily driver. RennTech rates the CL 65 AMG at up to 670 hp and 840 lb-ft with this upgrade, a gain of 66 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	54.215.CL65
RennTech rated output	670 hp / 840 lb-ft
Gain (RennTech)	+66 hp / +102 lb-ft

Fitment notes

For the CL 65 AMG (C215), 2003-2006 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	CL 65 AMG	C215	2003-2006	-

Fitment

Year	Make	Model
2003–2006	Mercedes-Benz	CL65 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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