Horsepower Connection.com

Horsepower Connection.com Call us for a quote on a complete EFI system or EFI tuning Consultation on your project. Brian Macy

We Provide Product Sales, EFI Tuning, Dyno Tuning Both Chassis and Engine, On and Off Track Support, Lake Tuning and Performance Upgrades Installed at Our Shop.

AI helping with engine combos? Car performance? What's next traction control? Predicted ET? Dial in classes may be a thi...
03/04/2026

AI helping with engine combos? Car performance? What's next traction control? Predicted ET? Dial in classes may be a thing of the past soon? I have started to use AI in many things in my daily tuning.

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Artificial intelligence isn’t tuning race cars, but it’s influencing how racers think about data, prediction, and consistency.

Did you know? The EFI Store and Horsepower Connection.com are direct WD dealers for the following companies. Most we hav...
02/17/2026

Did you know? The EFI Store and Horsepower Connection.com are direct WD dealers for the following companies. Most we have been with for over 20 years. Give us a call for parts for any of the following companies Or call to schedule for remote or in person EFI tuning. Brian 928-706-6112 shop or 360-280-6112 cell
ACCEL Performance
ADS
AEM Performance Electronics
Aeromotive Fuel Systems
AFIS injectors
Amp'd
Anvil Off-Road
APR
AUS Injection
B&M
Baer Brakes
Brawler
Bright Earth
Brothers Trucks
Callaway
Carroll Shelby Wheels
Classic Instruments
COMP Cams
Davis Traction Control
Daytona Sensors O2 sensors
Demon
DeWitts
DiabloSport
Dinan
Drake Muscle Cars
Earls
Edge Products
Edelbrock Group
FAST - Fuel Air Spark Technology
Fender Gripper
Flowmaster
Flowmonster
Fuel Tech
Halibrand
Haltech
Hans
Hays
Hilborn
HK Weels
Holley
Holley EFI
Ho**er
Ho**er Blackheart
HPT Turbos
HP Tuners
Hurst
Injector Dynamics
Kong Performance
Lakewood
Lengendary wheels
Lunati
Mallory
MagnaFuel Products Inc.
Mr Gasket
MSD Performance
NOS
PCS Transmission Controllers
Pro Connect
Pro Charger
Pulstar
Quickfuel
Quicktime
Racepak
Racequip
Range Technology
Rekudo
Retrobright
Rev Wheels
Roadrunner fittings
Rocket Racing wheels
Russell fittings
Scott Drake
Simpson Motorcycle
Simpson Racing
Sniper EFI
Spal Fans
Speartech
Stilo
Superchips
TCI Transmissions
TurboLamik 8HP Trans
Weiand
White Box
Wilson Manifolds
XDR

11/01/2025
10/25/2025
08/06/2025
07/19/2025
We are running a sale on Holley Dominator ecus right now, too cheap to post the price. PM me for price.
07/16/2025

We are running a sale on Holley Dominator ecus right now, too cheap to post the price. PM me for price.

07/16/2025

Brian Macy, based in Lake Havasu City, is the owner of Horsepower Connection, a specialty home-based shop focused on electronic fuel injection (EFI) programming and dyno tuning. Established in 2004 out of his passion for racing and performance, Brian’s shop is a reflection of his deep love for the...

06/18/2025
06/17/2025

Address

1555 Dover Avenue #2413
Lake Havasu City, AZ
86404

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+19287066112

Website

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