Name: Superchips F5 Flashpaq Jeep Wrangler TJ | JK 1998-2014
Brand: Superchips
SKU: 3874
Price: 524.95 USD
Availability: InStock

// WHY THIS PART EARNS ITS SPOT

Add 15-20 rear wheel horsepower over stock on premium fuel

Tunes for 87 octane and premium fuel provided

Corrects speedometer for tire upgrades between 26- 42(JK Models Only)

Equipped with Superchips industry-leading performance tuning

All Flashcal 3571 options included!

Crawl tune for low speed off-roading in 4wd (JK only)

Speedometer recalibration for gear /axle swaps up to 5.38

Locking axle options with transfer case in 4-Hi and 4-Low (2007-14 Rubicon only)

ESP stability optimization (2011-14 automatic transmission models only)

Engine idle adjustability for winching

Daytime running light options (2007-14 models only)

One touch lane change

TPMS On/Off

Accessory delay options (2011-14 models only - Includes adjustable delay for radios, accessory lights, and other aftermarket accessories tied to the same fuse)

Headlamp delay options (2011-14 models only)

Horn chirp and exterior lighting flash options when locking doors with keyless entry

Reads and clears diagnostic trouble codes

Internet updatable

EO# D-330-21

// THE FULL RUNDOWN

Superchips Flashpaq 3874 for 1998-2014 Jeep Wrangler TJ & JK Add Power, Adjust for Mods & Unlock Full Jeep Functionality The Superchips Flashpaq 3874 is the ultimate performance programmer for 1998-2014 Jeep Wrangler TJ and JK models, including the 4.0L, 3.8L, and 3.6L engines. Designed for Jeep owners who want both power and control, this tuner delivers proven horsepower and torque gains while giving you access to the most popular Flashcal features in one powerful handheld device. Preloaded with performance tunes for both 87 octane and premium fuel, the Flashpaq 3874 provides instant improvements in acceleration, throttle response, and overall drivability, whether you're on the road or off the beaten path. It's engineered to make towing, trail crawling, or daily driving smoother and more responsive. Beyond raw power, Flashpaq offers complete vehicle control with features like tire size and gear ratio calibration, TPMS (Tire Pressure Monitoring System) adjustment, and Rubicon-specific functions such as locker and sway bar control. Whether you've added larger tires, upgraded gears, or made other mods, Flashpaq keeps your Jeep running perfectly calibrated. For Jeep Wrangler TJ and JK owners, the Superchips Flashpaq 3874 combines the best of both worlds-Flashcal's legendary adjustment capabilities and performance tuning power-making it the go-to upgrade for power, precision, and control Specifications: Proposition 65 ⚠ WARNING: Cancer and Reproductive Harm https://www.P65Warnings.ca.gov

// WILL IT FIT? THE STRAIGHT ANSWER

VEHICLE	YEARS	TRIM
Jeep Cherokee	1998-2001	Classic
Jeep Cherokee	1998-2001	Limited
Jeep Cherokee	1998-2001	SE
Jeep Cherokee	1998-2001	Sport
Jeep Commander	2006-2010	Limited
Jeep Commander	2006-2007	Base
Jeep Commander	2006	65 Aniversario
Jeep Commander	2006-2010	Limited Premium
Jeep Commander	2006	65th Anniversary Edition
Jeep Commander	2007-2009	Overland
Jeep Commander	2007-2010	Sport
Jeep Grand Cherokee	1998	TSi
Jeep Grand Cherokee	1998-2010	Laredo
Jeep Grand Cherokee	1998-2010	Limited
Jeep Grand Cherokee	2002-2004, 2006-2009	Overland
Jeep Grand Cherokee	2002	Sport
Jeep Grand Cherokee	2004	SE
Jeep Grand Cherokee	2004	Special Edition
Jeep Grand Cherokee	2005-2010	Limited Premium
Jeep Grand Cherokee	2006	65th Anniversary Edition
Jeep Grand Cherokee	2010	S Limited
Jeep Grand Cherokee	2010	North Edition
Jeep Wrangler	1998-2004, 2007-2014	Sahara
Jeep Wrangler	1998-2006, 2010-2014	Sport
Jeep Wrangler	2001	60 Aniversario
Jeep Wrangler	2002-2011	X
Jeep Wrangler	2003-2014	Rubicon
Jeep Wrangler	2003	X AT
Jeep Wrangler	2004-2006, 2012	Unlimited
Jeep Wrangler	2005-2014	Unlimited Rubicon
Jeep Wrangler	2005-2006	SE
Jeep Wrangler	2006	X 65 Aniversario
Jeep Wrangler	2006	65th Anniversary Edition
Jeep Wrangler	2007-2014	Unlimited Sahara
Jeep Wrangler	2007-2011	Unlimited X
Jeep Wrangler	2009	X-S
Jeep Wrangler	2010-2014	Unlimited Sport
Jeep Wrangler	2010, 2012	Unlimited Mountain
Jeep Wrangler	2010	Islander
Jeep Wrangler	2011	70th Anniversary
Jeep Wrangler	2011	Unlimited 70th Anniversary
Jeep Wrangler	2012	Unlimited Altitude
Jeep Wrangler	2014	Unlimited Willys Wheeler
Jeep Wrangler	2014	Willys Wheeler

JAP FITMENT PROMISE // If we confirm fitment for your rig and it doesn't fit, return shipping is on us. No restocking fee. That's the deal.

// GETTING IT TO YOUR GARAGE

THIS PART //

Ships UPS/FedEx ground — estimated $34.95. Additional ground items in the same order ship at reduced rates. Exact rate calculated at checkout.

REAL-COST SHIPPING

We charge what the carrier charges — no padding, no games. Ground parcels via UPS/FedEx, signature required. You see the exact number before you pay.

1-2 DAY HANDLING

Most in-stock parts leave the warehouse within 1-2 business days. Built-to-order parts show extended lead times.

LTL FREIGHT FOR THE BIG STUFF

Bumpers, hardtops, axles and full kits ship LTL truck freight (typically $400-500 per unit, plus shipping protection). Freight is charged per unit — two bumpers means two freight charges. Inspect before signing and note any damage on the delivery receipt.

30-DAY RETURNS

Unused, uninstalled parts in original packaging within 30 days. RMA required — start with a quick message. Shipping charges are non-refundable; freight returns quote at carrier rates.

FULL SHIPPING & RETURNS POLICY

// PAY YOUR WAY

CHECKING PAYMENT NETWORK…

ALL MAJOR CARDS + WALLETS

Visa, Mastercard, Amex, Discover, Apple Pay, Google Pay and Link one-tap checkout — live in our Stripe checkout right now. Card numbers never touch our servers.

BUY NOW, PAY LATER — LIVE

Klarna, Afterpay and Zip are active at checkout on eligible orders. Pick your split at payment — get the lift now, pay as you wheel. No JAP paperwork, approval happens right in checkout.

CRYPTO — LIVE AT CHECKOUT

Pay with crypto directly in our Stripe checkout — select the crypto option at payment and settle in USDC and supported coins. On-chain payment, standard order flow, same warranty.

3-D SECURE + RADAR ANTI-FRAUD

Every card payment runs Stripe Radar machine-learning fraud screening, with 3-D Secure (Visa Secure / Mastercard Identity Check) stepping in automatically when your bank requires it. Your card, verified by your bank.

PCI-DSS L1

HIGHEST CARD-SECURITY CERTIFICATION

AES-256 + TLS 1.3

ENCRYPTED IN TRANSIT & AT REST

TOKENIZED

WE NEVER SEE YOUR CARD NUMBER

Payments are processed by Stripe — the same infrastructure behind Amazon, Ford and Shopify checkouts. Dispute protection and receipt trails on every order. See our Privacy Policy.

// COVERED WHEN IT COUNTS

THIS PART //

Backed by the full Superchips manufacturer warranty. JAP is an authorized dealer — your warranty is valid from day one.

FULL MANUFACTURER WARRANTY

Every part ships new in the box with the manufacturer's standard warranty — terms and duration vary by brand (typically 1 year to limited lifetime on hard parts). We only sell through authorized channels, so coverage is never voided by gray-market sourcing.

WE RUN THE CLAIM WITH YOU

Warranty issue? Don't fight the manufacturer's phone tree alone. Hit our team with your order number and photos — we open the claim with the brand and stay on it until it's resolved.

WHAT WARRANTY DOESN'T COVER

Defects in materials and workmanship are covered. Trail damage, improper installation, modification, and normal wear items (bushings, pads, wear plates) generally are not — that's standard across every brand we carry.

SEPARATE FROM RETURNS

Warranty claims (defects after use) and returns (unused parts within 30 days) are different lanes. Not sure which applies? Message us first — we'll route it the fast way.

START A WARRANTY CLAIM

FITMENT	Jeep Wrangler TJ
BRAND	Superchips — shop all Superchips parts →
PART #	3874
SKU	3874
CATEGORY	Tools and Maintenance > Engine Service
AVAILABILITY	IN STOCK
RETURNS	30-day return window

Superchips F5 Flashpaq Jeep Wrangler TJ | JK 1998-2014