Ag Diesel Solutions CAT4090 Performance Module for CAT C9 Acert Engine Tractors

Part #: CAT4090 UPC: 810010060310
Now $1,995.00
Free Second Day Air Shipping
ADD TO CART ($1,995.00)

Installation Instructions

Ag Diesel Solutions Performance Modules CAT4090 Details

Ag Diesel Solutions performance modules from PSI Power increase your vehicle's power safely and efficiently, giving you better fuel mileage in a vehicle warranty-friendly package. Rather than plug into the OBD-II port and communicate with the ECM like a traditional tuner, in-line power modules from Ag Diesel Solutions intercept the factory ECM signal en route to the fueling systems. The intercepted signal is then modified by the power module and continues on, providing all the benefits of efficiency and performance programming without ever communicating with the factory ECM. This plug-and-play tuning means there is no "footprint" in the ECM, and as long as you remove the module from your vehicle before taking it in to the dealership for warranty or service work, they will never know it was installed, keeping your valuable factory warranty intact.

Key Features

  • Add Horsepower, Torque and Fuel Mileage
  • Multiple Power Levels to Choose From
  • Change Power Levels On-The-Fly
  • Won't Void Your Factory Warranty (Remove the Module Before Service)
  • Engineered, Designed and Manufactured in the USA
  • US-Based Customer Service and Tech Support
  • Comes with Installation Instructions with Photos
  • 3 Year Manufacturer Warranty

Works in the Following CAT C9 & C7 Acert Off Highway Engines with HEUI Fuel Systems:



  • MT745B Tractor
  • MT755B Tractor
  • MT755C Tractor
  • MT765B Tractor
  • MT765C Tractor
  • 05-12 D6R LGP Series III Crawler Dozer
  • 05-12 D6R Series III Crawler Dozer
  • 05-12 D6R XL Series III Crawler Dozer
  • 05-12 D6R XW Series III Crawler Dozer
  • 05-12 12H Motor Grader
  • 324D LR Excavator
  • 324DL Excavator
  • 324DL LR Excavator
  • 324DL ME Excavator
  • 324DLN Excavator
  • 325D Excavator
  • 325DL Excavator
  • 325DL LR Excavator
  • 325DLN Excavator
  • 328D LCR Excavator
  • 329D Excavator
  • 329DL Excavator
  • 329DL LR Excavator
  • 329DL ME Excavator
  • 329DLN Excavator
  • 330D Excavator
  • 330DL Excavator
  • 330DL LR Excavator
  • 330DL ME Excavator
  • 330DL RE Excavator
  • 330DLN Excavator
  • 336D Excavator
  • 336D LN Excavator
  • 336D2 Excavator
  • 336DL Excavator
  • 336DL LR Excavator
  • 336DL ME Excavator
  • 340DL Excavator


  • 660 Combine
  • 670 Combine
  • MT445B Tractor
  • MT745B Tractor
  • MT755B Tractor
  • MT755C Tractor
  • MT765B Tractor
  • MT765C Tractor


  • 560R Combine
  • 570 Combine
  • 570R Combine
  • 575R Combine
  • 670SW Combine
  • 730 Combine
  • 740 Combine
  • 740TT Combine
  • 3800 Tractor


  • SS874 Rogator Sprayer
  • SSC1074 Rogator Sprayer
  • 1264 Rogator Sprayer
  • 1264C Rogator Sprayer
  • 1274 Rogator Sprayer
  • 1274C Rogator Sprayer
  • 1286 Rogator Sprayer
  • 1286C Rogator Sprayer
  • 1386 Rogator Sprayer
  • 1396 Rogator Sprayer
  • 6203 Terragator Sprayer
  • 8203 Terragator Sprayer
  • 8204 Terragator Sprayer
  • 8244 Terragator Sprayer 


Now you can control the power level of your module with the included mechanical switch, or Agricultural Diesel Solution’s Bluetooth Connect App. The easy to use Bluetooth feature is compatible with iPhone5 & newer, Android 7.0 & newer, and Samsung S7 & Newer. The Bluetooth has a 30 foot range. To download the application, go to your Apple Store for Apple devices, or the Google play store for android devices. Search “Ag Diesel Connect.” After you download and open the App, you’ll be able to see information on your diesel such as RPM and injector duration.


Bluetooth Connect App Allows Power Level Control Via Android or iPhone



This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to
California Proposition 65 Notice
Verify Fitment

Don't see your vehicle? Browse similar parts.
free shipping icon
FREE Shipping On all orders over $100
Secure shopping icon
Safe Shopping Payments 100% secure
phone icon
Have a question? 1-801-938-4891