SELECT YOUR
KIA.

Real dyno numbers from real cars built in this shop. Pick your model, choose your stage, see exactly what's possible.

Tuning Stage

ECU flash + intake. No hardware required. Daily-driver safe.

  • ECU Remap (OBD)
  • Boost Pressure +3 PSI
  • Intake Tune
  • Rev Limit Optimization

Free 15-min consultation · No credit card required

Stinger GT studio shot, three-quarter angle with dramatic key lighting
3.3T AWD · Lambda II
Stinger GT
Stage 1
Wheel HP
418
whp
Wheel TQ
396
wtq
HP Gain
+53
whp
TQ Gain
+20
wtq
Power Curve — Stage 1 vs StockActual Dyno Data
Stock365 whp
Stage 1418 whp
Rear wheel spinning on dyno rollers with heat shimmer visible, graph climbing in real time

NUMBERS DON'T LIE.
NEITHER DOES THE DYNO.

Every tune leaves this shop with a printed dyno sheet. Not marketing estimates. Not manufacturer specs. Wheel horsepower, measured on our Dynapack hub dyno, on your car, your fuel, your day.

2,847
Dyno Runs Logged
42whp
Avg HP Gain Stage 1
614
Builds Completed
99.1%
Customer Satisfaction
Live Dyno Queue: 3 Cars
Stock
2022 Stinger GT · 3.3T
Wheel HP352 whp
Wheel TQ368 wtq
Stage 2 Tune
Same car · 2 days later
Wheel HP462 whp +110
Wheel TQ431 wtq +63

THE PROCESS IS
THE PRODUCT.

No shortcuts. No bench-tune guesswork. Every car gets the same obsessive process regardless of budget.

Technician connecting laptop to OBD port for ECU tuning session
01 · ECU Flash
45 min
Flash Time

Laptop to OBD. No guesswork.

Our proprietary Kia-specific base maps are refined across hundreds of dyno pulls. Your flash takes 45 minutes and leaves with a printed baseline sheet.

Technician TIG-welding turbo-back exhaust section with sparks visible
02 · Fabrication
304SS
All Welds

TIG-welded in-house.

Downpipes, charge pipes, and custom exhaust sections fabricated by hand. Stainless 304 only.

Car on hub dyno with power curve graph visible on monitor
03 · Dyno Validation
5+ pulls
Per Tune

Every car gets certified.

Hub dyno, not roller. More accurate. Every tune is validated through a minimum of 5 heat-soaked pulls before the car leaves.

Kia performance car on empty road at night with city lights in background
04 · Street Validation
Zero knock
Sign-off standard

Real roads, not just rollers.

Post-dyno street pull with wideband logging. We chase knock, fueling anomalies, and heat soak before sign-off.

Performance shop technician reviewing data logs on laptop with customer
05 · Ongoing Support
$0
Reflash / 12 mo.

The tune evolves with you.

Mods change. Fuel changes. Track days happen. Your tune file is on file. Reflash updates are $0 for 12 months.

REAL CARS.
REAL SHEETS.

Every number below is from an actual dyno run. Names and car specs verified. No composite averages.

2021 Stinger GT2 3.3T AWD
Stage 2
Before
352
whp
After
461
whp
Gain
+109
whp
"Brought it in on a Tuesday, picked it up Thursday with a dyno sheet showing 461whp. The tune is clean — no hesitation, no weirdness, just more of everything. Mustang owners at the last cars & coffee were suspicious."
Marcus Webb, Stinger GT2 owner, smiling in front of his tuned Kia
Marcus Webb
Stinger GT2 Owner · Atlanta, GA
2023 Forte GT
Stage 1
Before
201
whp
After
217
whp
Gain
+16
whp
"I needed ten more horsepower to move up a class without touching the suspension setup. Stage 1 gave me sixteen and a torque curve that pulls harder from 2,500 RPM. Exactly what autocross demands."
Priya Nair, autocross competitor, beside her Stage 1 tuned Forte GT
Priya Nair
Autocross Competitor · Charlotte, NC
2022 K5 GT-Line AWD
Stage 2
Before
274
whp
After
341
whp
Gain
+67
whp
"I was skeptical about an OBD tune holding up on my daily. Six months, 12,000 miles, zero issues. Dealer ran diagnostics at my last oil change and flagged nothing. The car just pulls harder now."
Derek Osei, K5 GT-Line owner, standing beside his tuned Kia K5
Derek Osei
Daily Driver + Weekend Track · Nashville, TN
2020 Stinger GT 3.3T
Stage 3
Before
365
whp
After
508
whp
Gain
+143
whp
"508whp on stock internals. I thought they were being conservative when they said 500 was achievable. The dyno sheet lives on my refrigerator. The build took two weeks and every detail was communicated."
Caitlin Marsh, Stinger GT Stage 3 build owner, with dyno sheet printout
Caitlin Marsh
Stinger GT Stage 3 Build · Nashville, TN

BUILD YOUR
TUNE.

15 minutes. We scope your build, ask about your goals, and quote live on the call. No pressure, no upsell. Just your car and what it's capable of.

No pricing until we talk · No spam · We call within 1 business day

Dyno Catalog PDF

Model-specific dyno sheets, stage breakdowns, and real before/after overlays. 47 pages of actual data.

Why Boost

Kia-Exclusive Shop
Every technician certified on Kia platforms. We don't tune Mustangs.
Every Tune Certified
Printed dyno sheet with every build. No exceptions, no excuses.
12-Month Reflash Coverage
Mods change. Your tune file stays on file and updates are free for a year.
Direct Line to Your Tuner
Not a ticketing system. Your tuner's cell number is in the car folder.
Boost Performance
2847 Industrial Pkwy, Nashville, TN 37209
Mon–Fri 8AM–6PM · Sat by appointment