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USD 469
Part #: ATT1020

Attitude Performance 1020 The Adjuster (In-Cab Fuel Controller)

1994-1998 Dodge 5.9L Cummins
Part #: ATT1020
★★★★★ ★★★★★ 2 Reviews
$ $469.00
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The ADJUSTER 1020 by Attitude Performance Products is a patent pending In-Cab Fuel Controller for your 1994-1998 Dodge 5.9L Cummins. From optimum economy, to max power on the fly, the ADJUSTER by Attitude Performance Products gives you full control of your 12-Valve Cummins from inside the cab. 

With one turn of the in cab control knob, you have full adjustability to tune from optimum economy to maximum power (To pick up an extra 2mm of rack travel, use APPs P7100 Rack Cap #1007, see related items). All of this is done while retaining the AFC housing (boost advance) which is crucial for drivability. With the finite adjustment of the ADJUSTER by Attitude, you will be able to tune your engine without leaving your seat!

Because of its adjustability, the ADJUSTER by Attitude will work on every Bosch P7100 injection pump with no modification required; it has application for improving the performance of trucks from stock to highly modified. The ADJUSTER is flow-bench and dyno proven. The ADJUSTER housing comes pre-machined for the shut-off solenoid bracket on 94-98 Dodge Rams.
The ADJUSTER is a drop-in part! Its a direct replacement of the fuel plate and does not require removal of the injection pump. Installation is as simple as swapping a fuel plate. Finally theres a way to control your fueling from the cab. This product is 100% mechanical. Attitude is proud to introduce the ADJUSTER by Attitude (pat pend)

  • More Power: many dyno runs show a 10% increase.
  • Increased Fuel Economy: 3rd party testing delivered 10-25% increases in mpg.
  • Lower EGT's: a drop of 200-250 degrees in the mid ranges.
  • More Boost: 3-10 PSI increase.
  • Longer Pump Life: great for highly modified or large pumps, can defuel to under 150 cc's.
  • Full Rack Travel
  • Controls Smoke
  • Easy Installation

Kit Includes: The ADJUSTER By Attitude Housing with a #0 fuel profile (additional profiles can be purchased separately), New AFC housing arm machined for full fuel advance, Control Cable, In-Cab Control Box, All Necessary Hardware 

Test Results: 
Test bench flow results from a 12mm model 911 P7100 injection pump with model 191 delivery valves, 4000 rpm governor springs, with APPs optional rack cap (sold separately). This flow chart shows incremental Set Points on The ADJUSTER by Attitude knob, with corresponding fuel flow in ccs per 1000 strokes. (Testing of the injection pump with The ADJUSTER was performed by a Bosch authorized repair center.)

  • 1 - 45cc/1000
  • 1.5 - 50cc/1000
  • 2 - 56cc/1000
  • 2.5 - 72cc/1000
  • 3 - 80cc/1000
  • 3.5 - 102cc/1000
  • 4 - 119cc/1000
  • 4.5 - 123cc/1000
  • 5 - 152cc/1000
  • 5.5 - 184cc/1000
  • 6 - 215cc/1000
  • 6.5 - 240cc/1000
  • 7 - 281cc/1000
  • 7.5 - 304cc/1000
  • 8 - 320cc/1000
  • 8.5 - 358cc/1000.
  • 9 - 392cc/1000
  • 9.5 - 426cc/1000
  • 10 - 449cc/1000 End of rack travel (21mm)
Suggested Upgrades (Not Included):
Billet Delivery Valve Holders: The 1006 .093 Delivery Valve Holders flow more fuel and advance timing. They also a great way to dress up your injection pump. 

Optional Fueling Profiles: The ADJUSTER is shipped with a #0 profile, but additional profiles are available and may be ordered separately (see below). These profiles are dynamic for this part, not static; therefore Attitude Performance Products does not offer hp ratings, only recommendations for your applications.

P7100 Rack Cap:
The Attitude Performance Products 1007 Rack Cap allows full rack travel in your P7100 Injection Pump. Add this to The ADJUSTER for even more horsepower! 


  • MFG. Number 1020
  • Manufacturer Name Attitude Performance Products
  • Shipping Weight 4.00 lb.
  • Shipping Length 9 in.
  • Shipping Width 9 in.
  • Shipping Height 3 in.
  • Fuel Type Diesel
  • Patent U.S. Patent #10/054,060
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.00/5 Stars out of 2 Reviews
Best upgrade on my truck
Frank (Nevada) | October 8th, 2018
Installed this thing last week, and it is awesome. Best thing I’ve put on my truck in years. Easy to install and now I can dial up or down the fuel—full range. Everyone with a p-pump should have this, and I’m not easily impressed. Outstanding product.Frank
A MUST have for p7100 pumps
Thin air diesel LLC (Butte MT) | September 21st, 2016
Installed this on a customers pretty stock truck with a #8 towing plate arm. This thing is legit, on 1 it's like stock. 25 psi, 1000-1100 degrees on a hard pull, crank it to 10, 37 psi peak, 1600 EGT on the top of third gear and hauling the mail. With every other power option inbetween, on the fly, in cab, going down the road. It's a MUST for all p pumps.

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Questions and Answers

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Most Popular Questions

Will these work with the 3.9L 4bt cummins?
View Staff Answer 

Application information on XDP’s website is provided to XDP by the manufacturers directly. Any fitment questions other than what’s listed under the products application info must be directed to one of our Diesel Experts. Experts are available via E-mail (), Phone (1-888-343-7354) or LiveChat (Found on the bottom right hand corner of our website). This allows XDP to offer you a more personalized response to your question as well as an open channel for further questions and conversation.

Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.