Air and Fuel› Performance Packages

RENNtech

RPM ECU-Upgrade Supercharged V8

$2,793.75

SKU: 54.AJ133.RPM.ROVER-RNTEC

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Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The RENNtech RPM ECU-Upgrade is a performance module designed to increase horsepower and torque for Land Rover vehicles equipped with the 5.0L Supercharged V8 (AJ133) engine. It modifies ignition timing, throttle mapping, and air-to-fuel ratios to enhance performance across the entire power band. The module features a CNC machined 6061 aluminum case with pre-labeled wires and connectors and includes a bypass for easy switching back to stock settings.
Show original supplier description
The RENNtech RPM ECU-Upgrade is a power module engineered to boost horsepower and torque for specific Land Rover models featuring the 5.0L Supercharged V8 (AJ133) engine. This upgrade works by adjusting ignition timing, throttle mapping, and optimizing air-to-fuel ratios, providing enhanced performance across the vehicle's entire power band. The module itself is housed in a robust, CNC-machined 6061 aluminum case, ensuring durability. It comes with clearly labeled wires and connectors for straightforward installation. For convenience, the RPM includes a bypass function, allowing you to quickly revert the vehicle to its stock configuration. The harness can also be easily uninstalled for a complete return to the original settings. With over 30 years of ECU tuning expertise and extensive in-house R&D, RENNtech guarantees the RPM ECU upgrade delivers superior quality, performance, and reliability. For the Range Rover Sport (L320) from 2009-2013 and the standard Range Rover (L322/LM) from 2009-2012, expect gains of up to +61 HP and +59 LB-FT. For the Range Rover (L405/LG) from 2013-2021 and the Range Rover Sport SVR (L494/LW) from 2014-2021, gains can reach up to +34 HP and +44 LB-FT, depending on the specific model and year. Fitment is specific to the following Land Rover models with the 5.0L Supercharged V8 (AJ133) engine: Range Rover (L322/LM) 2009-2012, Range Rover (L405/LG) 2013-2021, Range Rover Sport (L320) 2009-2013, and Range Rover Sport SVR (L494/LW) 2014-2021. Professional installation is recommended for this product.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandRENNtech
Part Number54.AJ133.RPM.ROVER-RNTEC
CategoryAir and Fuel
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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