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The Moditorium

A high performance automotive resource for parts, how-to's, projects, buyer's guides, technical, events, and more.

Project FC3 - Perrin Rear Motor Mount Insert

Project FC3 Gets a 3 Inch Exhaust - DYNO RESULTS!

Tuning Project FC3 - No Parts, HUGE Gains

Project FC3 Honda Civic Si Gets Wheels, Tires, and Coilovers

Extending the Limits of Your Stock Focus ST Turbocharger

What You Need to Build a Focus ST Engine

Now Introducing... Our New AWD Dyno

All About Focus ST Auxiliary Fueling

When To Build Your Focus ST EcoBoost Engine

The 2018 Tax Return Sale - Coupon Code HERE

16 of the Easiest, Cheapest, Most Effective Focus ST Mods

Big Turbo Upgrade - The Ultimate Focus ST Mod

Putting Down 400whp In Your Focus ST

Low and Slow - Focus ST Brake and Suspension Upgrades

Ford Focus ST - Performance Introduction

6 Tips for Picking the Best Performance Parts

New Product: Grimmspeed Catback Exhaust for Subaru WRX and STI

GrimmSpeed Exhaust Review - FA20DIT Subaru WRX

New Kid On The Block - 2017 Honda Civic Si TURBO

Cobb Tuning Releases mk7 VW GTI AccessPort

Project Blue Boxer - Part 3: Nothing Too Flashy, Everything Functional

Cobb Tuning FA20DIT WRX Flex Fuel Kit - Exactly What To Expect

Why Your Mazdaspeed 3/6 Still Needs OEM Parts To Go Fast

Does the Subaru WRX and STI Really Need a Catch Can?

4 Reasons Why A Top Mount Intercooler Upgrade Makes Sense For Your Subaru WRX or STI

How to Prepare for a Dyno Tune

Project Blue Boxer - Part 2: Exhaust, Brakes, Wheels, Tires, and More Tuning

How to Plan a 2015+ WRX FA20DIT Build

What Blow Off Valve Should I Run?

Understanding a Dyno Graph.  Peak Numbers Aren’t the Whole Story…

When Is A Turbo Too Big?

Project Blue Boxer - Part 1: Tuning

When Do You Need A Bigger Intake?

The Magic of E85

5 Exhaust System Features To Consider

How to Switch Your EJ Powered Subaru WRX to E85

Detonation vs Pre-Ignition

3 Port Electronic Boost Control Solenoid: What and Why?

Free at last! - Cobb AccessPort for VW GTI Mk6

Breaking Down Bushing Stiffness

The Biggest Little Turbo: BNR S4 for Mazdaspeed 3 and 6

Dryflow vs Oiled Air Filters

4 Tips for a Longer Lasting Turbo

Methanol Injection - Risk or Reward?

Anatomy of a Clutch

Mods Not Likely to Void Your Warranty

Short Shifters vs. Short Shift Plates

It's All in the Name: Custom Performance Engineering

Tire Size and Wheel Offset – Decisions, Decisions

ACT Releases Clutch Kits for Focus ST 2.0 EcoBoost

E-Tuning for Dummies

Catalytic Converters and Modifying, Making Sense of It All

Stock MAF vs. Big MAF Housing

Running E85 On Your Mazdaspeed

CP-E Atmosphere Kit Now Available in "Bare Bones" Format for Mazdaspeed 3

Manley releases upgraded pistons and rods for Focus ST, Mustang EcoBoost engines

Bolt-On Power for Your FA20DIT WRX

The Top 5 Ford Focus ST Mods

Why the Cobb AP Should Be Your WRX’s First Modification

Fast Subarus, Colorado Roads. Enough Said.

HPFP Internals Upgrade for your Mazdaspeed 3 and 6

MazFest 2013

Invidia Downpipe Installation – 2012 Subaru WRX

Project Juvenile Part 1 – 2013 Ford Focus ST

Revvolution’s Project Subaru BRZ Turbo Build…Get Ready.

Choosing the Right Brake Pad

Precision Turbo and Engine Authorized Dealer!!

Top 10 Subaru WRX Mods under $150

How to Choose the Right Turbo – Part 1

PJ’s 2013 Ford Focus ST from Michigan

A Look Inside Grimmspeed

State of the Aftermarket: SEMA Show 2015