Supercharger Guide
Best Superchargers for the
2011 – 2021 Jeep Grand Cherokee 6.4L Hemi: Every Kit Compared
A complete comparison of every supercharger kit available for the 2011-2021 Jeep Grand Cherokee SRT8 (2012–2014) and SRT (2015–2021) 6.4L Hemi. ProCharger, Ripp, Whipple, and Edelbrock — Roots vs centrifugal, HP and torque gains, CARB compliance, and what each kit delivers.
At a Glance
Quick Comparison
| Brand / Kit | Type | Boost | HP Gain | Torque | CARB | Years | Price | |
|---|---|---|---|---|---|---|---|---|
| Ripp | Centrifugal | ~7 psi | +225 whp | — | Check product | 2016–2018 | $6,562 | SHOP → |
| ProCharger | Centrifugal | 7 psi | +200 whp | — | Yes | 2015–2021 | $7,749 | SHOP → |
| Whipple (15–17) | Twin-Screw (Roots) | ~6–7 psi | +225 whp | +175 lb-ft | Yes | 2015–2017 | $8,400 | SHOP → |
| Whipple (18–21) | Twin-Screw (Roots) | ~6–7 psi | +225 whp | +175 lb-ft | Yes | 2018–2021 | $8,600 | SHOP → |
| Edelbrock | Roots (R2650) | ~6–7 psi | +91 whp | +117 lb-ft | Varies | 2012–2014 | $9,723 | SHOP → |
Technical Foundation
Complete vs Tuner Kit & Roots vs Centrifugal
Understanding these two concepts will help you choose the right kit. Our Supercharger Buyers Guide covers this in depth; here’s the essentials.
Complete Kit vs Tuner Kit
A Tuner Kit is the supercharger hardware only. It does not include: larger fuel injectors, upgraded MAP sensor, fuel pump (or booster), handheld programmer/flash tool, or the supercharger tune. Those components are 100% necessary to run safely. You must supply them yourself.
Tuner Kits are for (1) custom builds where you want different fuel/tuning components than the manufacturer provides, or (2) vehicles with long-tube headers, aftermarket cam, or forged internals. The basemap tune in a Complete Kit is calibrated for factory exhaust manifolds and stock internals. If you install a Complete Kit on a car with headers or a cam, the vehicle will likely run too lean — risking catastrophic engine failure.
A Complete Kit includes fuel injectors, MAP sensor, fuel pump upgrade, flash tool, and tuning. It’s 100% bolt-and-go for stock or lightly modified vehicles (intake, cat-back, throttle body only). No additional parts or custom tune required.
Roots vs Centrifugal
Roots-style (Whipple, Magnuson, Edelbrock, Sprintex) superchargers mount in the intake manifold. They deliver more low-mid range torque and instant throttle response. They also produce more “whine” at idle. Best for drivers who want immediate punch off the line.
Centrifugal (ProCharger, Vortech, Ripp) superchargers mount off the side of the engine via a bracket. They build power toward mid-high RPM and often produce more peak horsepower. Both add significant power; choose based on driving style. Most Hemi Complete kits run 6–7 psi boost. Long-tube headers can drop boost by ~1.2–1.5 psi; Tuner Kits with custom pulley sizing compensate for modified builds.
Important
What to Know Before You Buy
Tuning & Unlocked PCM (2015+)
2015+ Grand Cherokee SRT has a locked PCM. You cannot tune without unlocking it. Options: (1) send your PCM to DiabloSport or HP Tuners (~$300, 1–2 weeks downtime), or (2) purchase a new unlocked PCM (~$1k, no downtime). ProCharger and Ripp use DiabloSport for 6.4L; Whipple uses HP Tuners. Critical: ProCharger requires you to email them your backup tune and head unit serial before installing. They send the supercharger tune via email (24–48 hrs). Do this first or your vehicle will be down waiting.
Complete vs Tuner: Which Do You Need?
Stock or simple bolt-ons (intake, cat-back, throttle body)? → Complete Kit. Headers, cam, or forged internals? → Tuner Kit with your own fuel system and custom tune. Installing a Complete Kit on a modified car risks lean AFR and engine damage. See our Buyers Guide for the full breakdown.
CARB & Emissions
Whipple Gen 6 is 50-state CARB legal for 6.4L Hemi. ProCharger is CARB certified for Grand Cherokee 6.4L. Ripp and Edelbrock vary — check EO numbers per product. Off-road-only kits cannot be registered in California. All Complete kits require 91 octane minimum. Standard warranty is 1-year; 3-year and 5-year extended warranties available through most manufacturers.
Installation & Lead Times
Professional install recommended (6–10 hours for Grand Cherokee). Budget for dyno tuning, fluids, and alignment. Lead times: ProCharger: 1–2 business days. Ripp: 2–4 weeks. Whipple and Edelbrock: 14–16 weeks (built-to-order). ProCharger does not include 1-step colder spark plugs; add NGK LFR6AIX. Ripp and Whipple include spark plugs. Hemi uses 2 spark plugs per cylinder (16 total); order quantity 4.
Side-by-Side
Compare All Five Kits
Ripp Supercharger
Type: Centrifugal (Vortech V-3)
Boost: ~7 psi
HP Gain: +225 whp (605 whp from 380 stock)
Kit: Complete — fuel, tuning, PCM unlock included
- +225 whp gain; 605 whp AWD from 380 stock
- Complete kit with fuel injectors, MAP sensor, spark plugs
- Vortech V-3 head unit; 2–4 week lead time
- PCM unlock included for 2015+
ProCharger HO Complete
Type: Centrifugal (P-1SC-1)
Boost: 7 psi
HP Gain: +200 whp on 91 octane
Kit: Complete — fuel, DiabloSport tuning included
- Broadest year coverage: full 2015–2021 SRT
- 50-state CARB certified for emissions compliance
- 100% bolt-and-go Complete kit
- ProCharger preferred for most Hemi apps per FastHemis Buyers Guide
- Fastest ship: 1–2 business days
Whipple Gen 6 (2015–2017)
Type: Twin-screw (Roots-style)
Boost: ~6–7 psi
HP Gain: Up to 50% / 45% torque
CARB: 50-state legal
- 50-state CARB certified — emissions compliant
- Roots-style: low-mid torque, instant throttle response
- Patented dual-core, dual-pass intercooler
- HP Tuners MPVI3, 1-step colder spark plugs included
Whipple Gen 6 (2018–2021)
Type: Twin-screw (Roots-style)
Boost: ~6–7 psi
HP Gain: +225 whp / +175 lb-ft
CARB: 50-state legal
- 50-state CARB certified — emissions compliant
- Roots-style: low-mid torque, instant throttle response
- Full 2018–2021 coverage; Hellcat injectors, billet fuel rails
- 1-step colder spark plugs included; HP Tuners MPVI3 included
Edelbrock DP-3C (R2650)
Type: Roots (Eaton R2650)
Output: 471 whp / 502 lb-ft
HP Gain: +91 whp from 380 stock
Kit: Complete
- Compact Eaton R2650 fits under stock hood
- Turnkey Complete kit for 2012–2014 SRT8
- Roots-style: instant low-mid torque
- 471 whp / 502 lb-ft at wheels
Our Picks
2015–2021 SRT, stock or light mods, need broadest coverage? ProCharger HO Complete: +200 whp, full 2015–2021 coverage, 50-state CARB certified, 100% bolt-and-go. ProCharger is FastHemis’s preferred centrifugal brand for most Hemi applications.
2016–2018 SRT and want maximum HP gain? Ripp delivers +225 whp (605 whp AWD from 380 stock). Complete kit with Vortech V-3, spark plugs, PCM unlock. 2–4 week lead time.
Need 50-state CARB and prefer Roots-style torque? Whipple Gen 6: choose 2015–2017 or 2018–2021 kit to match your model year. +225 whp, +175 lb-ft, instant low-mid response, dual-core intercooler.
2012–2014 SRT8? Edelbrock DP-3C (R2650) delivers 471 whp / 502 lb-ft. Compact Roots package fits under stock hood. Turnkey Complete kit.
Ripp Supercharger
Ripp’s Complete kit for the 2016–2018 Grand Cherokee 6.4L SRT adds +225 whp (605 whp AWD from 380 stock). The kit uses Vortech’s V-3 self-contained centrifugal supercharger, air-to-air front-mounted intercooler, FIC plug-and-play fuel injectors, pump amplifier, and a plug-and-play MAP sensor. Tuning and PCM unlock included. 6–8 hour install by a licensed mechanic.
Ripp includes 1-step colder spark plugs. 5.7L/6.4L Ripp kits use DiabloSport; PCM unlock included at no extra cost for 2015+. Lead time: 2–4 weeks. CARB status varies; check product listing. Ripp also offers kits for 2012–2014 SRT8 and 2015-only; choose the kit that matches your model year.
Pros
- +225 whp gain; 605 whp AWD from 380 stock
- Complete kit with fuel injectors, MAP sensor, spark plugs
- Vortech V-3 head unit; PCM unlock included
- 2–4 week lead time
Cons
- 2016–2018 only; separate kits for 2012–2014 and 2015
- CARB status varies — check EO numbers
ProCharger HO Complete
ProCharger HO Complete offers the broadest year coverage for Grand Cherokee 6.4L SRT: full 2015–2021. +200 whp at 7 psi on 91 octane. 100% bolt-and-go with fuel injectors, MAP sensor, and DiabloSport tuning. 50-state CARB certified. Ships in 1–2 business days.
Critical: Request your tune from ProCharger before installing. Email backup tune and head unit serial; 24–48 hr reply. Add NGK LFR6AIX spark plugs. Optional helical gears (~$100) eliminates idle clatter. 2015+ PCM unlock required: send to DiabloSport (~$300) or buy new (~$1k).
Pros
- Broadest year coverage: full 2015–2021 SRT
- 50-state CARB certified for emissions compliance
- 100% bolt-and-go Complete kit
- ProCharger preferred for most Hemi apps per FastHemis Buyers Guide
- Fastest ship: 1–2 business days
Cons
- Does not include 1-step colder spark plugs
- Must request tune before install; 2015+ PCM unlock required
- 2015–2021 only; no 2012–2014 SRT8 coverage
Whipple Gen 6 (2015–2017)
Whipple Gen 6 3.0L twin-screw for 2015–2017 Grand Cherokee 6.4L SRT. Up to 50% HP increase and 45% torque increase. Roots-style means more low-mid range torque and instant throttle response. Includes HP Tuners RTD Flash tool, security bypass, Hellcat fuel injectors, and billet fuel rails. 50-state CARB certified.
14–16 week lead time. PCM unlock included for 2015+ (ship to HP Tuners). 1-step colder spark plugs included. Optional cold air intake recommended. Choose this kit if your Grand Cherokee SRT is 2015–2017.
Pros
- 50-state CARB certified — emissions compliant
- Roots-style: low-mid torque, instant throttle response
- Patented dual-core, dual-pass intercooler
- HP Tuners MPVI3, 1-step colder spark plugs included
Cons
- 14–16 week lead time (built-to-order)
- 2015–2017 only; separate kit for 2018–2021
- Optional cold air intake recommended
Whipple Gen 6 (2018–2021)
Same Gen 6 3.0L twin-screw as the 2015–2017 kit, but for 2018–2021 Grand Cherokee 6.4L SRT. Delivers +225 whp and +175 lb-ft at ~6–7 psi. Includes Hellcat injectors and billet fuel rails for the updated platform. HP Tuners MPVI3 and 1-step colder spark plugs included. 50-state CARB certified.
14–16 week lead time. PCM unlock included for 2015+ (ship to HP Tuners). Optional cold air intake recommended. Choose this kit if your Grand Cherokee SRT is 2018 or newer.
Pros
- 50-state CARB certified — emissions compliant
- Roots-style: low-mid torque, instant throttle response
- Full 2018–2021 coverage; Hellcat injectors, billet fuel rails
- 1-step colder spark plugs included; HP Tuners MPVI3 included
Cons
- 14–16 week lead time (built-to-order)
- 2018–2021 only
- Optional cold air intake recommended
Edelbrock DP-3C (R2650)
Edelbrock Supercharger System DP-3C with Eaton R2650 for 2012–2014 Grand Cherokee SRT8 6.4L. Produces 471 whp and 502 lb-ft at the wheels (+91 whp from 380 stock). Compact design fits under the stock hood. Turnkey Complete kit.
Roots-style power delivery: instant low-mid torque and refined operation. Uses HP Tuners for tuning. 14–16 week lead time. 2012–2014 SRT8 only; for 2015+ SRT, see ProCharger, Ripp, or Whipple. CARB status varies; check product listing.
Pros
- Compact Eaton R2650 fits under stock hood
- Turnkey Complete kit for 2012–2014 SRT8
- Roots-style: instant low-mid torque
- 471 whp / 502 lb-ft at wheels
Cons
- 14–16 week lead time
- 2012–2014 SRT8 only
- Premium price point
Common Questions
Frequently Asked Questions
What’s the difference between Roots and centrifugal superchargers?
Roots (positive displacement) units like Whipple and Edelbrock deliver more low-mid range torque and instant throttle response. Centrifugal units (ProCharger, Vortech, Ripp) build power toward mid-high RPM and often produce more peak horsepower. Both add significant power; choose based on driving style. See our Supercharger Buyers Guide for details.
Do I need a Complete or Tuner kit?
If your Grand Cherokee is stock or has only simple bolt-ons (intake, cat-back, throttle body), get a Complete kit — it includes fuel injectors, MAP sensor, fuel pump upgrade, and tuning. If you have long-tube headers, a cam, or forged internals, you need a Tuner kit with a custom tune.
Will a supercharger void my warranty?
Under the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty for aftermarket parts. However, powertrain claims related to forced induction may be denied. Some manufacturers offer supplemental warranties.
Which kit fits my 2012–2014 SRT8 vs 2015+ SRT?
2012–2014 SRT8: Edelbrock DP-3C, Ripp (2012–2014 kit), ProCharger (2012–2014 kit), Whipple (2012–2014 kit). 2015–2021 SRT: ProCharger (2015–2021), Ripp (2015 or 2016–2018), Whipple (2015–2017 or 2018–2021). Choose the kit that matches your model year.
Why does ProCharger say to request the tune before installing?
The ProCharger tune file is not pre-loaded on the DiabloSport i3 tuner. You must email ProCharger your backup tune and head unit serial; they reply with the supercharger tune in 24–48 hours. If you install first, your vehicle will be down until the tune arrives. Do this step before you start the install.
What fuel do I need?
All Complete supercharger kits require 91 octane minimum. Higher octane (93) is fine and may allow slightly more aggressive tuning.
Ready to Supercharge Your Grand Cherokee 6.4L?
Browse all supercharger kits for the Jeep Grand Cherokee SRT8 and SRT 6.4L Hemi, or contact us if you need help choosing the right kit for your model year.
