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DiabloSport Marathon AFM Module

DiabloSport Marathon AFM Module

Part # M1000X

3 Reviews

2005-Present GM Vehicles Equipped w/ AFM

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The DiabloSport Marathon Module helps you get better fuel mileage by enabling your V8 engine to behave like a four-cylinder engine when cruising, while still allowing for full V8 power when you need it. Easy installation. Just plug into the OBDII port under the dash and drive. Compatible with GM vehicles built from 2005 to current that feature Active Fuel Management (AFM). Enables vehicles with AFM to drop cylinders in order to suit the driver\'s power requirements, while conserving fuel. Saves fuel by allowing vehicle to stay in 4-cylinder mode 80% of the time as opposed to only 35% from the factory.

About DiabloSport

Shop DiabloSport to view the Predator, inTune, and Trinity tuners and programmers for late-model GM, Ford, Dodge, Jeep, and Chrysler gas and diesel vehicles.

Brand	DiabloSport
Color Display	Yes
Emission Code	7
Fuel Type	Gas
Height	5.5
Length	2.8
Product Type	AFM/DFM/MDS Modules
Weight	1
Width	1.35
UPC	758381974631
Part Number	M1000X

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.

Reviews

3.3 out of 5 stars

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2 star
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Not sure ...

By JRaymer on August 17, 2021

I've had this on my Tahoe for almost a month and I haven't noticed any difference in my fuel efficiency. Sadly, I'm not even sure it's working other than there is a green light on. Would be nice to know what all four lights mean and if there is a problem, how to fix it. Installation instructions were easy, but lacking in any troubleshooting details. I'll update this post when I get more data. And wasn't happy to have to pay an extra $100 in customs fees to get it across the border ...

Slight improvement in mpg

By Legend45 on November 28, 2018

I see a slight improvement in average mpg. I know some of their other products can be updated. If this can I suggest making it go to V4 mode at idle and up to 1,200-1,300 RPM. Since there’s no hesitation in going to V8 mode when you STEP on it I don’t think a update like this would be a problem.

It mostly does what intended.

By Simba on January 13, 2019

This works well for flat roads with no wind. If you use it on rolling hills or steep hills the gas mileage remains about the same as without the chip, and if you add wind, even to flat roads, you definitely lose your advantage, but for the flat stretch that we typically drive we are seeing an improvement of about 5 MPG on average.

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*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.

DiabloSport Marathon AFM Module

DiabloSport Marathon AFM Module

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3.3 out of 5 stars

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