Collection
Digital Downloads
DD84 Digital Downloads & Service Products
Shop Down Dirty 84 tuning resources, tune reviews, diagnostic deposits, PCM service booking, Holley EFI support, and performance calibration services. Choose the product that matches your vehicle, issue, or tuning goal, then complete checkout to start the intake process.
Fast-start options: Remote Tune Readiness Review, Check Engine / No-Tune Diagnostic Deposit, PCM Service Booking Deposit, ECU Tune File Review, and Performance Shop Tuning Support.
22 items
DD84 Tune Support Advisor Access
$99.00
DD84 Tune Support Advisor Access
$99.00
Performance Shop Tuning Support Session
$150.00
ECU Tune File Review — GM / Ford / Dodge
$99.00
Pops & Bangs Add-On
$50.00
Holley EFI Fuse-Blowing & Power Loss Diagnostic
$125.00
Check Engine / No-Tune Diagnostic Deposit
$75.00
PCM Service Booking Deposit
$100.00
Remote Tune Readiness Review
$49.00
Performance Wiring & EFI Power Diagnostics
$75.00
Dodge / Mopar PCM Unlock Service
$200.00
Holley EFI Tuning & Diagnostics Service
$350.00
Toyota / Lexus Performance Tuning Service
$400.00
Dodge / Mopar Custom ECU Tuning Service
$350.00
Ford Custom ECU Tuning Service
$350.00
GM Custom ECU Tuning Service
$350.00
S550 Coyote HP Tuners Course — 2015–2023 Mustang GT
$199.00
P01 5.3L LS Chop Cam + 4L60E Base Tune
$299.00
LS Cam Swap Base Tune Review — HP Tuners
$99.00
LS Cam Swap Tuning Checklist — HP Tuners Gen 3/4
$24.99
DD84 Performance Maintenance Checklist — PDF
$19.99
DD84 Tuned Vehicle Maintenance Checklist — PDF
$19.99