MR

Marcus Reid

Performance Editor

Marcus has been building and breaking cars since his first turbo swap on a hand-me-down Civic in college. He covers performance modifications, tuning, and anything that makes a car faster. His current project is a 2019 Mustang GT with a Whipple supercharger that keeps finding new ways to empty his wallet.

54 articles · Covers: Performance, Customization

Articles by Marcus

Pre-Summer Tune Check — Why Spring-Calibrated Tunes Often Run Lean by July, and What to Watch
Performance

Pre-Summer Tune Check — Why Spring-Calibrated Tunes Often Run Lean by July, and What to Watch

Brake Pad Selection for Street Cars That See Occasional Track Days — What Actually Matters
Performance

Brake Pad Selection for Street Cars That See Occasional Track Days — What Actually Matters

Turbo vs. Supercharger in 2026 — A Decision Framework That's Not Just About Power
Performance

Turbo vs. Supercharger in 2026 — A Decision Framework That's Not Just About Power

Cooling System Upgrades Before Summer — Where the First Failure Actually Shows Up
Performance

Cooling System Upgrades Before Summer — Where the First Failure Actually Shows Up

Intake and Exhaust Pairing 101 — Why Matching Matters More Than Either Alone
Performance

Intake and Exhaust Pairing 101 — Why Matching Matters More Than Either Alone

Opening Tuning Season — What to Check Before Your First Dyno Day of 2026
Performance

Opening Tuning Season — What to Check Before Your First Dyno Day of 2026

How to Read a Dyno Sheet Without Getting Fooled by Peak Numbers
Performance

How to Read a Dyno Sheet Without Getting Fooled by Peak Numbers

Bolt-On Exhaust Upgrades That Actually Change How Your Car Drives
Performance

Bolt-On Exhaust Upgrades That Actually Change How Your Car Drives

2026 Ford Mustang Dark Horse SC: What the Supercharged V8 Means for Enthusiasts
Performance

2026 Ford Mustang Dark Horse SC: What the Supercharged V8 Means for Enthusiasts

OEM+ Interior Upgrades That Age Better Than Trendy Add-Ons
Customization

OEM+ Interior Upgrades That Age Better Than Trendy Add-Ons

Do Throttle Controllers Change Performance or Just Pedal Feel?
Performance

Do Throttle Controllers Change Performance or Just Pedal Feel?

Cold Air Intake, Cat-Back, or Tune: Which Upgrade Changes the Car Most?
Performance

Cold Air Intake, Cat-Back, or Tune: Which Upgrade Changes the Car Most?

Street-Friendly Brake Upgrades Before You Add Power
Performance

Street-Friendly Brake Upgrades Before You Add Power

Seat Covers, Floor Mats, and Small Cabin Upgrades That Don't Feel Cheap
Customization

Seat Covers, Floor Mats, and Small Cabin Upgrades That Don't Feel Cheap

Cold-Weather Comfort Mods: Heated Accessories, Remote Start, and Cabin Prep
Customization

Cold-Weather Comfort Mods: Heated Accessories, Remote Start, and Cabin Prep

Winter Car Customization Ideas That Improve Comfort and Protection
Customization

Winter Car Customization Ideas That Improve Comfort and Protection

Adventure-Ready SUV Upgrades That Still Work for School Runs and Commutes
Customization

Adventure-Ready SUV Upgrades That Still Work for School Runs and Commutes

Intake, Exhaust, or Tune? Choosing the Right First Power Mod
Performance

Intake, Exhaust, or Tune? Choosing the Right First Power Mod

AI in Car Customization: Useful Tools, Limits, and Better Planning
Performance

AI in Car Customization: Useful Tools, Limits, and Better Planning

Car Mods You May Regret: Three Mistakes to Avoid
Customization

Car Mods You May Regret: Three Mistakes to Avoid

Customizing a Car on a Budget Without Wasting Money
Customization

Customizing a Car on a Budget Without Wasting Money

Make Your Ride Green: Eco-friendly Customizations for Cars
Performance

Make Your Ride Green: Eco-friendly Customizations for Cars

Paint Protection Film vs Vinyl Wrap: When Each Option Makes Sense
Customization

Paint Protection Film vs Vinyl Wrap: When Each Option Makes Sense

Beginner Overlanding Mods That Won’t Ruin Everyday Comfort
Customization

Beginner Overlanding Mods That Won’t Ruin Everyday Comfort

Top 8 Modifications You Can Do to Your Truck
Performance

Top 8 Modifications You Can Do to Your Truck

First Track-Day Prep for a Street Car: Safety, Fluids, and Brakes
Performance

First Track-Day Prep for a Street Car: Safety, Fluids, and Brakes

Truck Bed and Cargo Upgrades for Fall Projects
Customization

Truck Bed and Cargo Upgrades for Fall Projects

Tires Before Tune: The Smartest First Upgrade for Grip and Braking
Performance

Tires Before Tune: The Smartest First Upgrade for Grip and Braking

Daily-Driver Mods That Improve Looks Without Hurting Resale
Customization

Daily-Driver Mods That Improve Looks Without Hurting Resale

Enhance Your Car's Acceleration with These 6 Top Modifications
Performance

Enhance Your Car's Acceleration with These 6 Top Modifications

Beginner Bolt-Ons: Which Performance Mods Deliver the Best Value First?
Performance

Beginner Bolt-Ons: Which Performance Mods Deliver the Best Value First?

RearVision Smartphone-based Aftermarket Backup Camera
Performance

RearVision Smartphone-based Aftermarket Backup Camera

Throttle Response Controllers: What They Change and What They Do Not
Performance

Throttle Response Controllers: What They Change and What They Do Not

Featuring ECU Tuning Software Specialists OE Tuning
Performance

Featuring ECU Tuning Software Specialists OE Tuning

A Bright Pair of Nissan JUKEs Glow in Australia
Customization

A Bright Pair of Nissan JUKEs Glow in Australia

60 Minutes Of 2014 SEMA Show Cars And Trucks
Customization

60 Minutes Of 2014 SEMA Show Cars And Trucks

Lifted Trucks of the SEMA Show
Customization

Lifted Trucks of the SEMA Show

Carbon Fiber Car Mods: Where They Help and Where They Are Just Style
Customization

Carbon Fiber Car Mods: Where They Help and Where They Are Just Style

8 Inexpensive Custom Truck Accessories
Customization

8 Inexpensive Custom Truck Accessories

After Lifting Your Truck: Alignment, Tires, Brakes, and Daily-Driving Checks
Customization

After Lifting Your Truck: Alignment, Tires, Brakes, and Daily-Driving Checks

Featuring Turner Motorsport in Amesbury, MA
Customization

Featuring Turner Motorsport in Amesbury, MA

Transform Your Ride Using LED Lights For Cars
Customization

Transform Your Ride Using LED Lights For Cars

Featuring Venom Motorsports from Grand Rapids, Michigan
Customization

Featuring Venom Motorsports from Grand Rapids, Michigan

Modified Porsche 911 Turbo by TuneRS Motorsports
Customization

Modified Porsche 911 Turbo by TuneRS Motorsports

Check out all the awesome goldRush Rally cars!
Customization

Check out all the awesome goldRush Rally cars!

Check out our Bimmerfest 2015 Photos!
Customization

Check out our Bimmerfest 2015 Photos!

10 Custom Paint Job Ideas and How to Choose the Right Finish
Customization

10 Custom Paint Job Ideas and How to Choose the Right Finish

8 Ways To Increase Horsepower Now
Performance

8 Ways To Increase Horsepower Now

What exactly are Riveted Body Kits?
Customization

What exactly are Riveted Body Kits?

What Is a Restomod? Classic Style With Modern Drivability
Customization

What Is a Restomod? Classic Style With Modern Drivability

Three ways to quickly customize your car
Customization

Three ways to quickly customize your car

What is backdating?
Customization

What is backdating?

Maximizing your car's performance by optimizing as a system
Performance

Maximizing your car's performance by optimizing as a system

Car Customization: From Classic Mods to Modern Tech
Customization

Car Customization: From Classic Mods to Modern Tech