Buy Diesel Performance and Gas Performance Products Factory Direct: 800-601-8072
01-10
GM - 8.1L Workhorse
Total RV Power System
Delivers top gains of +51 hp and +68 lb-ft torque, plus better fuel economy.
Gains Up To:+51 hp/+68 lb-ft
Stinger® System
CLASS-A MOTORHOME, W-Series and P-Series: Affordable stainless-steel Stinger includes Banks' all-new Ram-Air intake system (available for W-Series only) that eliminates restrictions for effortless flow. Optional OttoMind Programmer removes the factory-imposed power delay so you'll have acceleration when you need it. Stinger delivers top gains of +51 hp and +68 lb-ft torque to the rear-wheels, plus better fuel economy. Because engine airflow is the central principle to Stinger and all Banks power-enhancement products, you'll have a more durable vehicle and longer engine life.
Includes: High-flow Banks Ram-Air intake system (W-Series only) with Ram-Air filter & service kit, filter housing cover, large-sized tubing, and adapter; OttoMind Programmer (available for '01-05 models); Stainless, constant-diameter Monster exhaust with 4" tailpipe; Polished-stainless, 5" double-wall tailpipe tip with rolled edge; Comprehensive Owner's Installation Manual.
Here's the TEST REPORT
for your vehicle!
Get a hard copy in the mail »
View it right now online »
Motorhome Power
Gasoline: GM 8.1L Workhorse, '01-06
Test vehicle: 2004 Workhorse W-22, GM 8.1L V-8
Transmission: 5-speed Allison
| Stinger System with OttoMind | Stock | Banks | Improvement | Results |
|---|---|---|---|---|
| Horsepower: Best gain (hp) | 197.0 @3300 rpm |
232.0 @3300 rpm |
+35.0 hp | 18% more |
| Horsepower: Peak-to-peak (hp) | 222.2 @4200 rpm |
257.0 @4200 rpm |
+34.8 horsepower | 16% more, peak-to-peak |
| Torque: Best gain (lb-ft) | 313.5 @3300 rpm |
369.2 @3300 rpm |
+55.7 lb-ft torque | 18% more (3300 rpm) |
| Torque: Peak-to-peak (lb-ft) | 314.2 @3400 rpm |
369.2 @3300 rpm |
+55.0 lb-ft torque | 18% more, peak-to-peak |
| Acceleration, 0-60 mph Time (sec) | 23.08 | 20.47 | -2.61 sec | 11% quicker |
| Acceleration, 0-60 mph Distance (ft) | 1,252 | 1,100 | -152 ft | 12% less |
| Acceleration, 40-60 mph Time (sec) | 11.12 | 9.75 | -1.37 sec | 12% quicker |
| Acceleration, 40-60 mph Distance (ft) | 831 | 727 | -104 ft | 13% less |
| Maximum speed, hill-climb (mph) 6% grade | 57 (3rd Gear) |
63 (3rd Gear) |
+6 mph | 11% faster |
| Fuel Economy (mpg) 55-MPH, 7% grade | 2.68 | 2.96 | +0.28 mpg | 10% better |
| Fuel Economy (mpg) 70-MPH, 0% grade | 7.19 | 7.54 | +0.35 mpg | 5% better |
| Application | Year Range | Part # |
|---|---|---|
| Stinger System P-series chassis | GM 4-speed trans | Driver-side tailpipe exit | 2001-04 | 49550 |
| Stinger System W-series chassis | Allison trans (all) | Driver-side tailpipe exit | 2001-08 | 49552 |
| Stinger System W-series chassis | Allison trans (all) | Passenger-side tailpipe exit | 2001-08 | 49553 |
| Stinger System w/OttoMind P-series chassis | Driver-side tailpipe exit | 2003-04 | 49565 |
| Stinger System w/OttoMind W-series chassis | Driver-side tailpipe exit | 2001-02 | 49566 |
| Stinger System w/OttoMind W-series chassis | Passenger-side tailppipe exit | 2001-02 | 49567 |
| Stinger System w/OttoMind W-series chassis | Driver-side tailpipe exit | 2001-07 | 49568 |
| Stinger System w/OttoMind W-series chassis | Passenger-side tailpipe exit | 2001-07 | 49569 |
| Exhaust extension kit Exhaust extension kit | P-series | 190" wheelbase | 2001-04 | 53681 |
| Exhaust extension kit Exhaust extension kit | P-series | 208" wheelbase | 2001-04 | 53682 |
Owners Manual(s)
| Exhaust- Exhaust Extension Kit 2005 (Part #96428) Class-A, Workhorse chassis, W-series |
 Download |
| Power Systems- PowerPack &Stinger systems '00-07 (Part #96431) Class-A MH, W-series |
Download |
| Power Systems- PowerPack & Stinger systems '01-04 (Part #96432) Class-A MH, P-series |
Download |
| Power Systems- PowerPack & Stinger systems '05 & Later (Part #96438) Class-A MH, W-24 chassis |
Download |
8.1L motorhome Stinger & OttoMind: Totally pleased
2010-08-20
Thank you for a great product. I installed the Stinger System and OttoMind Programmer in a 2005 Allegro Bay, 38', 23000 lbs. This system has given me power on demand and increased fuel economy by a mile per gallon. I am totally pleased.
John P.
Wichita Falls, TX
RV Today features Banks
It's an old episode but what Gale explains about the principles of improving the performance in your RV still applies today.
Accolades
“We went to the source of diesel-engine performance, Gale Banks Engineering, and struck gold. Not only did it take one stop to buy and have our parts installed, but the parts worked as advertised and the results were awesome.”
Off-Road (Mar '04)