When I decided to upgrade the intake on my 6.2-liter Hellcat, I knew I wanted a proven system that wouldn’t break the bank. After researching dozens of owner reviews, dyno charts, and forum discussions, I settled on the JLT intake. This article covers every detail of my real-world experience—from the decision process and installation costs to the horsepower gains and long-term impressions. If you’re considering a cold air intake for your Hellcat, here’s exactly what you need to know before pulling the trigger.

Why I Chose JLT for My 6.2 Hellcat

The JLT intake system has earned a strong reputation in the Dodge Charger, Challenger, and Durango SRT communities. It’s not the flashiest or most expensive option, but it consistently delivers reliable gains without requiring a custom tune. Here are the primary reasons I chose JLT over competitors like AFE, K&N, and Roto-Fab:

  • Proven airflow design: JLT uses a large, smooth intake tube and a high-flow dry filter that maximizes air volume while maintaining excellent filtration. Unlike oiled filters, the dry element reduces the risk of MAF sensor contamination—a common issue on Hellcats with certain intakes.
  • Heat shielding that works: The included heat shield seals effectively against the factory hood liner and air box, keeping intake air temperatures lower than the stock box. This is critical for consistent power in stop-and-go traffic or after a hard pull.
  • Direct bolt-on fitment: No cutting, drilling, or modification needed. The kit uses all factory mounting points and hoses, making it a true plug-and-play upgrade for 2015–2023 Hellcat models.
  • Owner-verified gains: Multiple independent dyno tests from Hellcat owners show 15–25 wheel horsepower and 10–20 lb-ft of torque with no tune. While numbers vary by vehicle and environment, the consensus is that JLT offers the best price-to-performance ratio among cold air intakes.

I also appreciated that JLT publishes detailed dyno graphs on their website and has active support on the Hellcat Forum—something I verified before buying. It’s a company that stands behind its product.

Detailed Cost Breakdown

My total out-of-pocket expense came to $430, but that base number can change depending on whether you DIY or hire a shop. Here’s a full breakdown of every dollar I spent, plus optional costs to consider:

Base Costs

  • JLT intake kit: $350 (purchased directly from JLT Performance. Prices fluctuate; holiday sales can knock $30–$40 off.)
  • Shipping: $30 (standard ground. Expedited shipping adds $15–$20 more.)
  • Basic hand tools: $0 (I already owned a socket set, flathead screwdriver, and Torx bits. If you need to buy a set, budget $50–$70.)

Optional / Hidden Costs

  • Professional installation: Many independent shops charge 1–2 hours of labor for intake swaps. At $100–$150 per hour, add $100–$300.
  • MAF sensor cleaner: ~$10 (useful if you accidentally touch the sensor element during installation).
  • Custom tune: Not required for the JLT intake, but if you want to maximize gains and adjust the air/fuel ratio, a dyno tune runs $500–$800. Most owners skip this for a simple bolt-on intake.
  • Throttle body spacer or ported throttle body: Some owners pair the JLT intake with a larger throttle body for even more flow. That adds $300–$600.

Overall, $430 is a very reasonable entry point for a genuine performance upgrade. Compare that to a cat-back exhaust ($1,000+) or a supercharger pulley upgrade ($2,500+), and the JLT intake makes sense for anyone wanting noticeable gains without emptying the wallet.

Step-by-Step Installation Guide

The installation took me about 45 minutes from opening the garage door to taking my first test drive. Below is an expanded walkthrough with tips I wish I’d had beforehand.

Tools Needed

  • 10mm socket and ratchet
  • 8mm socket
  • Flathead screwdriver (for prying clips)
  • T20 Torx bit (for the MAF sensor screws)
  • Needle-nose pliers (for hose clamps)

Step 1: Disconnect the Battery

Always disconnect the negative battery terminal before working near the engine bay. This prevents accidental shorts and resets the ECU’s learned fuel trims—giving you a clean slate to adapt to the new intake.

Step 2: Remove the Factory Intake

Start by loosening the clamps on the air box lid and the intake tube near the throttle body. Unplug the MAF sensor electrical connector. Carefully pull the intake tube out of the throttle body opening. Next, unclip the air box from the fender well by pressing the two retaining tabs. Lift the entire factory assembly out. Set it aside—you can sell it on forums for $50–$100 if it’s in good shape.

Step 3: Install the JLT Heat Shield

Bolt the provided aluminum heat shield into the factory air box mounting points using the supplied hardware. Make sure the rubber seal at the top contacts the hood liner evenly. This seal prevents hot engine bay air from bypassing the filter.

Step 4: Mount the JLT Intake Tube

Slide the silicone coupler onto the throttle body opening and tighten the clamp loosely. Then position the intake tube so it aligns with the heat shield opening and the MAF sensor flange. Insert the MAF sensor into the new tube (using the supplied O-ring and screws). Secure the tube to the heat shield with the bracket.

Step 5: Attach the Filter and Hoses

Connect the intake filter to the end of the tube and tighten its clamp. Reattach the two small breather hoses from the valve covers to the barb fittings on the intake tube. Double-check all clamps.

Step 6: Reconnect and Test

Plug the MAF sensor back in. Reconnect the battery. Start the engine and let it idle for 30 seconds. Inspect all connections for vacuum leaks—listen for whistling or hissing. If everything sounds normal, take a short test drive. The ECU will relearn the airflow within 20 miles, so initial idle may be slightly rough.

Performance Gains: Before and After

I tracked my Hellcat’s performance using a Dragy GPS unit (for quarter-mile estimates) and a P3 vent-mounted gauge for real-time intake air temperatures (IAT). Here are the measurable changes I observed:

Horsepower and Torque

I didn’t dyno my car, but I compared data from JLT’s published charts and several independent Hellcat forum runs. On standard 93-octane pump gas, the average gain is 18–22 whp and 15–18 lb-ft of torque in the mid- to high-RPM range. Peak gains occur around 5,500–6,000 rpm. My seat-of-the-pants impression confirmed that the car pulled noticeably harder from 70 to 120 mph.

Quarter-Mile Improvement

Before the JLT intake, my best Dragy quarter-mile pass was 11.48 seconds @ 124.3 mph (stock tires, no prep). After installation, I recorded 11.35 seconds @ 125.1 mph—a gain of roughly 0.13 seconds and 0.8 mph. That’s consistent with what other owners report. The intake alone won’t make your Hellcat a 10-second car, but it’s a solid 0.1–0.2 second improvement.

Intake Air Temperatures

With the factory air box, IATs would climb to 30–40°F above ambient during back-to-back pulls. The JLT heat shield kept IATs within 10–15°F of ambient during the same conditions. Lower IATs mean more consistent power and less timing pull. On a hot summer day (95°F ambient), the car felt much punchier with the JLT.

Sound Enhancement

This is subjective, but the JLT intake dramatically improved the supercharger whine. The stock intake muffles the whine; the JLT lets you hear the Eaton rotors singing. It’s not obnoxious—just a deeper, more aggressive growl during heavy throttle. At cruising speeds, there’s no drone.

Common Questions and Concerns

Do I need a tune with a JLT intake?

No. The JLT intake is designed to maintain the same MAF sensor scaling and air/fuel ratio as the stock system. Hundreds of owners run it without a tune with zero check engine lights. That said, a custom tune will extract another 5–10 horsepower and improve drivability. It’s optional.

Will it void my warranty?

If your vehicle is still under factory warranty, a cold air intake could potentially void coverage if a related failure occurs (e.g., water ingestion or MAF damage). However, most dealers are fine with simple bolt-ons. I recommend keeping your stock intake to swap back before warranty visits, just in case.

How often do I need to clean the filter?

JLT’s dry filter lasts 30,000–50,000 miles before cleaning. When needed, you can tap excess dirt out or use a low-pressure air hose from the inside out. Do not use oil or soap—the dry filter doesn’t require it.

Can I combine the JLT intake with a larger throttle body?

Yes. Many owners pair a 95mm or 100mm throttle body with the JLT for increased flow. You’ll need a tune to take full advantage. I haven’t done this yet, but forum members report gains of 30+ whp with the combination.

Final Verdict

After six months and 5,000 miles, I’m completely satisfied with my JLT intake. The installation was straightforward, the cost was fair, and the performance improvements are undeniable—especially for the price. The sound alone makes every drive more exciting. If you’re on the fence, I’d say go for it. Just make sure you follow the instructions, torque the clamps properly, and take that first test drive with a grin on your face.

One last tip: if you buy a JLT intake, join the Hellcat Forum or the Dodge Challenger SRT Facebook group. Those communities have years of data, tips, and even group buys that can save you money on future upgrades.

Additional Resources

  • JLT Performance Official Site: jltperformance.com – direct ordering and product specs
  • Hellcat Forum: hellcatforum.org – owner reviews, dyno threads, and installation tips
  • Dragy GPS Performance Meter: dragymotorsports.com – the tool I used for before/after times
  • P3 Gauges: p3gauges.com – for monitoring IATs and other engine vitals
  • Dodge Challenger SRT Facebook Group: Facebook Group – active community with real-time advice