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Speed School Podcast with Gale Banks

PowerPack Bundle

Starting at $2,769.00

Select Options
PowerPack Bundle

Starting at $2,769.00

Select Options
Banks PowerPack system
Banks PowerPack system
Banks PowerPack system
Banks PowerPack system
Banks PowerPack system
Banks PowerPack system

PowerPack Bundle

Pass, merge, & climb effortlessly, +70hp/+92lb-ft
For 2001-2003 GM Class-A Motorhome 8.1L, W20/W22, Driver or Passenger-side tailpipe exit
Call for availability
MSRP $3,076.67


Choose Your PowerPack Bundle

Free Shipping on orders over $250 (48 Contiguous US)*

Ultimate RV Power System. Everything needed for dramatic power gains. Pass, merge, and climb effortlessly. Adds up to +70 hpand +92 lb-ft (rear wheel); optimizes mileage and durability.

US Patent #6,634,171 B1

50 State Compliant

CARB E.O. D-161-75

Fitment Note

Fits W-series chassis Allison 5-speed trans EGR-equipped Driver or Passenger-side tailpipe Exit

Key Features

  • Optimizes airflow, air density, continuous power & MPG
  • Adds up to +70 hp and +92 lb-ft (rear wheel)
  • Honors the host vehicle & improves longevity
  • Pass, merge, and climb effortlessly
  • CHROME tip


Banks PowerPack features a revolutionary new Ram-Air intake system* that delivers greater airflow and air density for more power. A pair of stainless-steel, tuned-length TorqueTubes exhaust manifolds provide stunning torque output when you want it. Pass, merge and climb as you please: your PowerPacked coach won't break a sweat. Achieve best gains of +70 hp and +92 lb-ft torque at the rear wheels, with better fuel economy - and never require high octane.

Important: Some vehicle configurations require an extension kit for proper fit.

*Note: Banks Ram-Air intake system available for W-Series only. P-series chassis with wheelbases over 190 inch require extension kit. W-series chassis do not require extension kit.

Includes: Ram-Air Cold-Air Intake System, TorqueTube Exhaust Manifold System, Monster Exhaust System, Chrome Tailpipe, Heatshield, Banks Power Urocal, CARB Decal, Includes all necessary hardware.

Questions? Contact Support

Motorhome Power

Gasoline: GM 8.1L Workhorse
Test vehicle: 2004 Workhorse W-22, GM 8.1L V-8
Transmission: 5-speed Allison

GM 8.1L Workhorse Horsepower
GM 8.1L Workhorse Torque

GM 8.1L Workhorse Airflow
GM 8.1L Workhorse Exhaust Backpressure
GM 8.1L Workhorse Muffler Flow

GM 8.1L Workhorse Acceleration
GM 8.1L Workhorse Hill-climb and Economy

PowerPack® System with AutoMind Stock Banks Improvement Results
Horsepower: Best gain (hp) 222.2
@4200 rpm
@4200 rpm
+70.2 hp 32% more
Horsepower: Peak-to-peak (hp) 222.2
@4000 rpm
@4200 rpm
+70.2 hp 32% more
Torque: Best gain (lb-ft) 302.3
@3800 rpm
@3800 rpm
+92.3 lb-ft 31% more
Torque: Peak-to-peak (lb-ft) 314.2
@3400 rpm
@3500 rpm<
+85.9 lb-ft 27% more
Acceleration, 0-60 mph Time (sec) 23.08 18.72 -4.36 sec 19% quicker
Acceleration, 0-60 mph Distance (ft) 1,252 1,001 -251 ft 20% less
Acceleration, 40-60 mph Time (sec) 11.12 8.84 -2.28 sec 21% quicker
Acceleration, 40-60 mph Distance (ft) 831 658 -173 ft 21% less
Maximum speed, hill-climb (mph) 6% grade 57
(3rd Gear)
(4th Gear)
+10 mph 18% faster
Fuel Economy (mpg) 55-MPH, 7% grade 2.68 3.26 +0.58 mpg 22% better
Fuel Economy (mpg) 70-MPH, 0% grade 7.19 7.78 +0.59 mpg 8% better

Customer Reviews

8.1L motorhome PowerPack: Best move I ever made


Purchased the 8.1L PowerPack recently and had a chance to use it this week. Best move I ever made. Excellent system and I will recommend it to any one in need. Your employees are class act. Thank you and keep us on the list of new products.

Guy D.
Hobart, OK

8.1L motorhome PowerPack: Very satisfied!


I had your exhaust and intake systems with the OttoMind programmer installed and am very satisfied with your product. I get @ 2 miles to the gallon better fuel mileage while towing a 2010 Toyota Yaris. The difference is definetely noticeable. Good engineering job!

Dennis H.

click for magazine review

If you are considering this system, you've got to read what RV Magazine has to say about it!

free test report

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