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M Engineering

McLaren M840T - Stage 2+ Power Package

$9,195.00

SKU: M0DE M840T-S2+-PP

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In Stock
Ships by Oct 5
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$100 Minimum Order
Non-Returnable Item
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Overview

The M-Engineering Stage 2+ Power Package is a comprehensive tuning solution for McLaren vehicles with the M840T engine. This package includes Injector Dynamics ID1050x injectors, a Race Spec wiring harness, and the M-Tuner Calibration Suite with the Motorsport Tuning Package. It enables the use of E85 fuel, offering performance comparable to race fuels like MS109 and GT260 Plus.

The included wiring harness is a direct plug-and-play replacement, eliminating the need to modify the factory engine harness. Live map switching allows for seamless transitions between pump gas and E85 using the cruise control stalk.
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Part #: M840T-S2+-PP

Stage2+ Power Package by M-Engineering combines the leader in aftermarket injector technology, a motorsport grade quality wiring harness, and wraps it all up together with the M-Tuner Suite and Motorsport Tuning Package. With this kit you will now be able to run E85 on your stock turbo 720S / 765LT / GT SENNA and fully maximize the potential of the stock turbochargers on gasoline based fuels. With Stage2+ you can now use E85 from the pump and have the same performance benefits as running MS109,

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

BrandM Engineering
Part NumberM0DE M840T-S2+-PP

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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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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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