The Stage 2 upgrade for the 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 truck combines our Stage 1 High Flow Bundle and Stage 2 Intake Kit into a single package providing increased airflow for your turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can contribute to lost power, boost leaks, and complete failures in hard working and high-performance applications.

On the air intake side, our high flow fabricated intake pipe, intake horn, and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on 2017-2019 L5P Duramax Diesel for improved engine performance and sound. Significantly increases airflow to your turbo producing improved horsepower and torque and cooler intake temperatures by drawing cold air through the hood Ram Air duct and inner fender. All aluminum 14 ga. construction features large diameter 4 in. piping with smooth aerodynamic bends. Improves intake air velocity, volume, and provides a more aggressive engine and turbo sound during acceleration. Air box is constructed of 10G aluminum sheet. The intake horn is over an inch larger than the OEM diameter and we experienced a 25HP Gain with our 3.5 in. turbo inlet when used with a Max Effort Tune. High quality hardware, silicone boot, seals, and stainless-steel t-bolt clamps ensure optimum durability and ease of installation. Removable air box lid element allows for easy visual inspection and maintenance of your WCFab filter with included hydrophobic pre-filter cover, to help keep your MAF sensor, turbo, and engine airways contaminant free. The critical ram air duct seal has been moved to the bottom of the hood for a clean engine compartment appearance.

After the turbo, our Stage 2 kit also upgrades the restricted 2-piece, resonator equipped, 2.5 in. diameter driver (Hot) side intercooler pipe and leak-prone 2-piece plastic / rubber passenger (Cold) side pipe with WCFab's heavy duty 3 in. diameter 1-piece Driver (Hot) Side and 3.5 in. diameter Passenger (Cold) Side L5P Intercooler Pipes. Made in the USA from high strength, heavy duty 14 ga. aluminum tube with smooth, aerodynamic mandrel bends for increased durability and optimized flow. 3 in. Driver Side pipe eliminates the OEM resonator and middle boot joint for improved flow and durability and includes high quality reinforced silicone boots and stainless t-bolt clamps for superior temperature resistance and boost pressure holding capabilities. 3.5" Passenger Side pipe features a CNC machined flange with a double O-ring seal and an upgraded silicone boot in order to withstand higher boost pressures than the factory components to increase reliability and eliminate blown factory boots and horsepower robbing boost leaks.

Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. Installs with basic hand tools. Compatible with stock trucks, no tuning required.

Saves $60 vs. buying individually.

Pairs best with emissions compliant tuning and larger drop in turbochargers.

POWDER COATING - CHECK OUT OUR VIDEO

Powder coating has quickly become one of the most popular alternatives to traditional paint coatings. This type of surface finishing uses a dry powder applied electrostatically as a coating. The part is then cured in an oven for a period of time at temperatures ranging from 380-425*F to form a solid, durable finish. Powder coating not only looks great, but it also lasts longer while providing protection from harmful corrosion. To further improve corrosion resistance for components exposed to the weather we can first apply a Zinc-Rich Base Coat primer before the final color, which offers nearly ten times the corrosion resistance of just a standard coat of powder.

 

Wehrli Custom Powder Coating is housed under the same roof as Wehrli Custom Fabrication. Including 4 state of the art spray booths for both powder and ceramic coating applications and 6 curing ovens. Exceptional quality control, preparation, and packaging is our standard operation and what we have become known for. With over 30 different colors in stock at our facility, you have many options to choose from. If you don't see one you like, Prismatic Powders has over 5000 colors to choose from! (Non-stocked colors requested it will incur an additional fee) Below is a list of what we have in stock!

 

 

STANDARD OPTION SINGLE COAT COLORS

 Bengal Red (-BR)

 Chevy Orange (-CRO)

 Cat Yellow (-CAT)

 Kiwi-Green (-KIWI)

 Bengal Blue (-BB)

 Brizzle Blue (-BRZ)

 Gloss White (-GW)

 Bengal Silver (-BS)

 Gun Metal (-GM)

 Bengal Gray (-BG)

 Fine Texture Black (-FTB)

 Flat Black (-FB)

 Semi Gloss Black (-SGB)

 Gloss Black (-GB)

UPGRADED TWO COAT COLORS (ADDITIONAL FEES APPLY)

 WCFab Grey / Kingsport Grey (-GRY)

 WCFab Red / Illusion Cherry (-RED)

 Cherry Frost (-CF)

 Candy Red (-CR)

 Sparkle Copper (-SC)

 Sparkle Bomber Orange (-SBO)

 Orange Frost (-OF)

 Fluorescent Orange w/ White WCFab Emblem (-FO)

 Shocker Yellow (-SY)

 Fluorescent Green w/ White WCFab Emblem (-FG)

 Sparkle Granny Smith (-SGS)

 Candy Teal (-CT)

 Candy Blue (-CB)

 Blueberry Frost (-BBF)

 Illusion Blueberry (-IBB)

 Illusion Purple (-IP)

 Grape Frost (-GF)

 Candy Purple (-CP)

 Bronze Chrome (-BC)

 Deore Gold (-DG)