Supercharger Guide
Best Superchargers for the
2015 – 2023 Dodge Challenger 6.4L Hemi: Every Kit Compared
A complete comparison of every supercharger kit available for the 2015-2023 Dodge Challenger Scat Pack, SRT 392, and T/A 6.4L Hemi. ProCharger, Vortech, 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 | |
|---|---|---|---|---|---|---|---|---|
| Vortech | Centrifugal | ~7 psi | +245 whp | +160 lb-ft | Varies | 2015–2020 | $7,088 | SHOP → |
| ProCharger | Centrifugal | 7 psi | +215 whp | — | Yes | 2015–2023 | $7,149 | SHOP → |
| Whipple | Twin-Screw (Roots) | ~6–7 psi | +225 whp | +175 lb-ft | Yes | 2018–2023 | $8,500 | SHOP → |
| Edelbrock | Roots (Eaton R2650) | ~6–7 psi | +157 whp | +116 lb-ft | Varies | 2015–2018 | $10,447 | 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. Whipple has achieved 180+ rwhp on 6.4L 392 systems. Best for drivers who want immediate punch off the line.
Centrifugal (ProCharger, Vortech) 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+ Challengers have 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 Vortech use DiabloSport; Whipple and Edelbrock use 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 car 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 (2018–2023). ProCharger is CARB certified. Vortech 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 (8–14 hours). Budget for dyno tuning, fluids, and alignment. Lead times: ProCharger: 1–2 business days. Whipple and Edelbrock: 14–16 weeks (built-to-order). Vortech: 10–12 weeks. Whipple and Edelbrock include 1-step colder spark plugs; ProCharger and Vortech do not — add NGK LFR6AIX. Hemi uses 2 spark plugs per cylinder (16 total); order quantity 4.
Side-by-Side
Compare All Four Kits
Vortech Complete
Type: Centrifugal (V-3 Si)
Boost: 7 psi
HP Gain: +245 whp / +160 lb-ft
Kit: Complete — fuel, tuning included
- Highest HP gain of the four: +245 whp, +160 lb-ft
- Complete kit, 100% bolt-and-go
- Centrifugal: strong mid-high RPM power delivery
- V-3 Si head unit: proven efficiency and durability
ProCharger HO Complete
Type: Centrifugal (P-1SC-1)
Boost: 7 psi
HP Gain: +215 whp on 91 octane
Kit: Complete — fuel, DiabloSport tuning included
- Broadest year coverage: full 2015–2023 (Widebody included)
- 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 3.0L
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
- Patented dual-core, dual-pass intercooler
- 2018–2023 coverage; HP Tuners MPVI3, spark plugs included
Edelbrock Stage 1 (Eaton R2650)
Type: Roots (Eaton Gen VI R2650)
HP Gain: +157 whp / +116 lb-ft
Output: 572 whp / 531 lb-ft at wheels
Kit: Complete, turnkey
- Compact Eaton R2650 fits under stock hood
- Turnkey Complete kit for Scat Pack / SRT 392
- Roots-style: instant low-mid torque, refined power delivery
- 2015–2018 Challenger and Charger coverage
Our Picks
6.4L Scat Pack / SRT 392, stock or light mods, need broadest coverage? ProCharger HO Complete: +215 whp, full 2015–2023 coverage (including Widebody), 50-state CARB certified, 100% bolt-and-go. ProCharger is FastHemis’s preferred centrifugal brand for most Hemi applications.
2015–2020 and want maximum HP gain? Vortech Complete delivers +245 whp and +160 lb-ft — the highest gains of the four. Centrifugal power delivery favors mid-high RPM. Check CARB status for your state.
Need 50-state CARB and prefer Roots-style torque? Whipple Gen 6 for 2018–2023: +225 whp, +175 lb-ft, instant low-mid response, dual-core intercooler. The only CARB-certified Roots option for 2018+ 6.4L Challenger.
2015–2018 and want a compact Roots package? Edelbrock Stage 1 (Eaton R2650) fits under the stock hood, delivers 572 whp / 531 lb-ft at the wheels, and is turnkey for Challenger and Charger.
Vortech Complete
Vortech Complete delivers the highest HP gain of the four: +245 whp and +160 lb-ft at 7 psi. The V-3 Si head unit is proven for efficiency and durability. 100% bolt-and-go Complete kit with fuel injectors, MAP sensor, and tuning included. Covers 2015–2020 Challenger Scat Pack, SRT 392, Shaker, and T/A. Centrifugal power delivery favors mid-high RPM.
Vortech does not include 1-step colder spark plugs; add NGK LFR6AIX. No helical gears option — standard straight-cut may clatter at idle. Lead time: 10–12 weeks. CARB status varies; check EO numbers.
Pros
- Highest HP gain of the four: +245 whp, +160 lb-ft
- Complete kit, 100% bolt-and-go
- Centrifugal: strong mid-high RPM power delivery
- V-3 Si head unit: proven efficiency and durability
Cons
- 2015–2020 only; no 2021–2023 coverage
- Does not include 1-step colder spark plugs
- No helical gears option
- 10–12 week lead time
ProCharger HO Complete
ProCharger HO Complete offers the broadest year coverage: full 2015–2023 including Widebody. +215 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 2015–2023 (Widebody included)
- 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
Whipple Gen 6 3.0L
Whipple Gen 6 3.0L delivers +225 whp and +175 lb-ft at ~6–7 psi. Roots-style means low-mid torque and instant throttle response. FastHemis’s favorite Roots brand. Patented dual-core, dual-pass intercooler. HP Tuners MPVI3 OBDII interface and 1-step colder spark plugs included. 50-state CARB certified for 2018–2023 6.4L Challenger.
14–16 week lead time (built-to-order). PCM unlock for 2015+ included (ship to HP Tuners). Optional cold air intake recommended over factory air box. Textured Black standard; Gloss Black, Red, Yellow, White, Orange, Polished available.
Pros
- 50-state CARB certified — emissions compliant
- Roots-style: low-mid torque, instant throttle response
- Patented dual-core, dual-pass intercooler
- 2018–2023 coverage; HP Tuners MPVI3, spark plugs included
Cons
- 14–16 week lead time
- 2018–2023 only
- Optional cold air intake recommended
Edelbrock Stage 1 (Eaton R2650)
Edelbrock Stage 1 uses the compact Eaton Gen VI R2650 Roots-style supercharger, which fits under the stock hood. Turnkey Complete kit for Scat Pack and SRT 392. Delivers 572 whp and 531 lb-ft at the wheels (+157 whp / +116 lb-ft over stock) at ~6–7 psi. Roots-style: instant low-mid torque, refined power delivery. Covers 2015–2018 Challenger and Charger.
Edelbrock (with Whipple, Magnuson, Sprintex) is a Roots-style manufacturer. HP Tuners tuning. Built-to-order; check lead times. 2015+ PCM unlock required.
Pros
- Compact Eaton R2650 fits under stock hood
- Turnkey Complete kit for Scat Pack / SRT 392
- Roots-style: instant low-mid torque, refined power delivery
- 2015–2018 Challenger and Charger coverage
Cons
- 2015–2018 only; no 2019+ coverage
- Premium pricing
- Built-to-order; check lead times
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) build power toward mid-high RPM and often produce more peak horsepower. Both add significant power; choose based on driving style.
I have a Widebody Scat Pack. Will these kits fit?
Yes. ProCharger, Vortech, Whipple, and Edelbrock kits for the 6.4L Challenger fit both standard and Widebody models. Confirm your model year with the product listing — Vortech covers 2015–2020; Edelbrock 2015–2018; Whipple 2018–2023; ProCharger 2015–2023.
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.
Which kit is 50-state legal?
Whipple Gen 6 for the 6.4L Hemi (2018–2023) is CARB certified and 50-state legal. ProCharger is CARB certified. Vortech and Edelbrock vary — check each product’s EO number.
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 car will be down until the tune arrives.
What fuel do I need?
All Complete supercharger kits require 91 octane minimum.
Ready to Supercharge Your 6.4L Challenger?
Browse all supercharger kits for the Dodge Challenger Scat Pack and SRT 392, or contact us if you need help choosing the right kit.
