Built Not Bought. Tuned Not Guessed.

DD84 HP Tuners S550 Coyote Tuning Course (2015–2023) — NA + Boost (Beginner → Intermediate)

2003 GMC Sierra 1500 — 4.8L V8 (GM Gen3) — P59 PCM — OS 12579405

Stage 1 ECU Tune — 2013 Audi Q5 3.0T (Simos 8.5)

Toddler Long Sleeve Tee — Toddler Long Sleeve Tee

Engraved 'Down Dirty 84' 14oz Scented Soy Candle — Automotive Tuning Logo Candle

Embroidered Pom-Pom Knit Beanie — Cozy Grey Winter Cap with Logo

Down Dirty 84 Logo Winter Neck Gaiter with Drawstring — Cold Weather Face Mask & Neck Warmer

Down Dirty 84 Logo Sticker — Neon Green Car Enthusiast Decal

Down Dirty 84 Embroidered Knit Beanie

Trucker Cap — Classic Mesh Back Baseball Hat

Long Sleeve Tee — Classic Minimalist Solid

Crewneck Sweatshirt — Classic Minimalist Crewneck

Women's Pajama Pants — All-Over Print Cozy Sleepwear

Women's Flowy Scoop Muscle Tank — Lightweight Summer Activewear

Unisex Heavy Blend™ Hooded Sweatshirt

P01 Base Tune – 5.3 LS “Chop Cam” + 4L60E (Stock Injectors)

LS Cam Swap Base Tune Review – HP Tuners

LS Cam Swap Tuning Checklist – HP Tuners (Gen 3 & 4)

DD84 Tuned Vehicle Maintenance Checklist (PDF)

DD84 Performance Maintenance Checklist (PDF)