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2009 Mercury Grand Marquis Performance Chips & Programmers

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Latest Customer Reviews

DiabloSport OBD-II Port Cover Reviews


Purchased The Diablo I-1000- for my 2010 Mercury Grand Marquis

Reviewed By Marcel M (PHOENIX, AZ) Reviewed for a 2010 Mercury Grand Marquis —4/5/2014 12:49 PM

This cover is excellent quality, I am very impressed with it. It Keeps the Ford dealer from "re-programming to default" my set performance parameters on routine maintenance visits. Or at least it puts them on notice when they see their code reading machine will not plug in.... Then then the mechanic will check the work-order that they failed to read in the first place, and see I TOLD THEM TO NOT TOUCH MY PORT!this will change my parameters.They leave it alone and all is well with the world. :)

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Hypertech Max Energy Programmer Reviews


2010 grand marquis

Reviewed By john f (Stratford, CT) Reviewed for a 2010 Mercury Grand Marquis —12/14/2013 6:34 AM

Did download without any additional changes yet. Performance has increased. Also sounds better. Very easy to do.

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Hypertech Speedometer Calibrator Reviews


Did exactly as it said it would

Reviewed By Kevin K (Sussex, WI) Reviewed for a 2014 Dodge Ram —8/27/2015 3:54 AM

With having larger after market tires on the truck and checking my speed with my GPS, I was moving 4 MPH slower than my speedometer was reading. After a couple of programming attempts to dial in my tire size so my speedometer would match my GPS. I am very happy with the results. Now my truck runs a lot better, transmission shifts better, and PMG improved.

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