Reputation
Known for doing what others won't.
Speed Shop · Acworth, GA · Est. 2014
Turning Dreams Into Reality
Honda & Acura specialists, LS swaps, in-house engine building and blueprinting, custom turbo kits, in-house fabrication and dyno tuning. One shop for just about everything.
- Best of Georgia 2025
- DynoJet 224xLC In-House
- Hondata Dealer
HondaHondataHolley EFIHaltechPRL MotorsportsPrecision TurboDynojetAEMAeromotiveMishimotoARPBC RacingVibrant PerformanceLiqui MolyAMSOILHP TunersMotosport.com
What We Do
One Shop. Just About Everything.
From bolt-ons to complete builds, we bring your performance goals to life. Specializing in Honda, Acura, and GM performance, we handle engine building and in-house blueprinting, turbo and supercharger setups, custom fabrication, drivetrain upgrades, and in-house dyno tuning. We also offer general maintenance and expert consultation to help you plan your next move. Whether you’re building a daily driver or chasing bigger power, we’ve got the experience to put it all together.
All Services
01 · B · K · Newer Hondas
Honda & Acura
Our specialty. Mostly B-series and K-series builds, and we're getting into the newer Hondas now.
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02 · BBC · SBC · Gen III · IV
GM Performance
More power, a little chop, built to perform. Engine services for BBC, SBC, Gen 3 and Gen 4 GM V8s.
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03 · Built to order
Custom Turbo Kits
Custom turbo kits, tailored to the customer's needs and build.
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04 · DynoJet 224xLC
Dyno Tuning
In-house dyno tuning. We tune a lot of Holley EFI, Honda, Haltech and other standalone ECUs.
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05 · In-house
Fabrication
A lot of fabrication in-house: intakes, catch cans, brackets, downpipes and more.
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06 · Rebuilds · Blueprinting
Engine Builds
Engine repair, rebuilds and blueprinted builds, plus bay painting and electrical wiring & design.
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07 · Plan the build
Build Consulting
We do a lot of consulting for people's builds.
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08 · General
Maintenance & Repair
We don't mind general maintenance either, especially on the cars we build and take care of.
Learn MoreOff The Dyno Sheet
The Shop, By The Numbers
From our own shop and our in-house DynoJet 224xLC.
Est.No. 01
2014
Established
Dynojet 224xLCNo. 02
2,000HP
Dyno measurement capacity
DrumNo. 03
200MPH
Max dyno speed
PartnersNo. 04
15
Brands we partner with
Platforms
What We Build & Tune
ECUs We Tune
- Holley EFIStandalone
- HondaHondata dealer
- KTunerHonda
- HP TunersGM
- HaltechStandalone
- Other standalone ECUs
From The Bay
Recent Work
Parts
Thousands Of Parts. One Local Shop.
Through Turn 14 Distribution, we have access to thousands of performance parts from leading brands. From everyday upgrades to complete builds, we can help you find the right parts, get them ordered, and handle the installation. Don’t see what you need? Give us a call.
No parts posted right now. Check back soon, or call the shop and ask what's on the shelf.
Call The Shop
Award Winner
Best of Georgia 2025
Voted a Best of Georgia 2025 winner, and chasing it again in 2026.
Since 2014
One Shop For Just About Everything
ATL Powerhouse Performance is a speed shop in Acworth, GA, run by owners Harrison and Erik. Engine tuning, turbocharging, suspension upgrades, custom fabrication and blueprinted engine builds, with dyno tuning in-house.
- Hondata dealer
- Snap Finance available
- Best of Georgia 2025 winner
Why ATL Powerhouse
What We're Known For
Summit Racing
First import shop to put an import car on display at Summit Racing.
Dyno
We will dyno just about anything.
Financing
Financing Available Through Snap
Finance repairs and upgrades with Snap Finance. Ask us how to apply.