The Mystery of the Round Subaru Radiator Cap
Having an incorrect radiator cap on a turbo EJ Subaru is a critical mistake that even seasoned Subaru builders, including us have made. In fact, one of our sharp-eyed readers…
Introducing Garrett Motions New GVW Series Wastegates
Garrett Advancing Motion has just released their new line of external wastegates for controlling turbo boost! The wastegates are available in three sizes, the GVW40 with a 40mm valve, the…
WATCH: How Turbocharger Wastegates Work – Internal vs External PLUS New Wastegates from Garrett!
Today Mike looks at turbocharger wastegates and how they are used in a turbocharged vehicle application to control boost pressure. We talk about the differences between internal and external wastegates,…
WATCH: K-series Short Block Guide
Today we’ll show you how to properly build your Honda K-series short block. We’ll go over how to choose pistons for your specific application, block limits, processes available and…
WATCH: Exhaust Back Pressure Myth DEBUNKED!
Today Mike debunks the old fart claim that “you need a little back pressure” in your exhaust or you’re not gonna make any torque, power, etc! If you liked…
Mike Kojima Guest on HP Academy’s Podcast on Suspension!
We have always really liked the content that the guys from HP Academy create. They share the same passion for technical excellence as we do and we were recently honored…
WATCH: Solid Nissan KA24DE Budget Build!
This week Mike takes a look at the often overlooked Nissan KA24DE engine and shows us why it may deserve a second look before tossing it in the trash…
Human Centered Design and the Automobile
Hi, I’m Emma…but you can call me Spicy Carrot. I’m a Human-Centered Designer for NASA Jet Propulsion Laboratory with a never-ending passion for usability in the Motorsports space. I’ve studied…
What is Shot Peening and Why is it Useful?
If you are a long-time MotoIQ reader you probably know we often prescribe shot peening for heavily stressed metal parts. You have probably read about us prescribing the shot peening…
Simpson Safety’s Hybrid S Head and Neck Restraint
Not all of us drive on the track in race cars, in fact, most of us probably drive on track days in street-legal vehicles. Some of us do this as…
What is E-Fuel and Can it Save the Internal Combustion Engine?
Political beliefs aside, we are pretty sick of our mindless politicians mandating stupid green policies without any thought of their economic impact and how to successfully implement them. Take for…
The Most Advanced 240SX/ Nissan S Chassis, Z32/300ZX, R32/GT-R Rear Suspension Ever From GKTech!
In our last story about Suspension for our upcoming S13 Project car, we went over what we feel is the ultimate front suspension/angle kit for the S Chassis from GKTech. …
Subaru WRX Econo Suspension! Part 2
We had last left our GD WRX with the front suspension mods from ST Suspension and Whiteline. Now it’s time to finish the installation at the rear suspension and get…
Subaru WRX Econo Suspension! Part 1
A lot of what you see here at MotoIQ are often really high-end mods that many people can just dream about or are so high performance and track level that…
Porsche 992 GT3 Undercar Overview
Porsche is a very conservative company, much of the Porsche development on legacy models like the 911 is incremental. Even the latest models have cues dating back to the original. …
The Most Advanced 240SX/ Nissan S Chassis Front Suspension Ever From GKTech!
We will soon be starting work on a new MotoIQ project car, we have obtained A Nissan S13 240SX hatchback with a totally stock SR20DET swap. This car is going…
Pikes Peak 2022, Redemption for Team Evasive and the Model 3 Tesla-Part 2
Action Pictures by Larry Chen After we qualified 4th on Thursday, Friday was fairly quiet, we just had to prep the car and attend the Colorado Springs fan feast. …
WATCH: What Cryogenic Treatment is & Why You Need It!
In this video Mike sits down with Bentzion BenAmi of CTP, the cryogenic processor we use for all our serious engine and drivetrain builds. They discuss the history of…
Pikes Peak 2022, Redemption for Team Evasive and the Model 3 Tesla-Part 1
Action Photos by Larry Chen Last year’s Pikes Peak Hill Climb even was a disaster for Team Evasive Motorsports. Although the Model 3 Tesla ran well in practice and qualification…
The CFD Development of Ken Block’s Hoonipigasus Porsche
A couple of weeks ago I wrote a story about the aerodynamics of Ken Blocks Hoonipigasus Porsche 911. I was wondering how close I was to being right so I…
WATCH: How to Build a Turbo Ford Duratec V6
We build a lot of different engines here at MotoIQ. We also have exclusive engine programs for a number of high performance companies such as Raiden Performance who we…
Project FR-S, Improving the Aero Balance with Verus Engineering and Victory Function
When driving Project FR-S on the track we had noticed that although the car had excellent handling in general, it had understeer in high-speed turns. We also noticed in pictures…
WATCH: Long Tube vs Short Tube Headers | The Technical Differences
A lot of people know that long tube headers generally make more power than short-tube headers, but not many people talk about the technical reasons for that and when…
More Power for your Electrical system! (Most Race Cars and Drift cars Need This)
Power demands on modified cars, particularly race cars have been going up and up in the past few years. More power means more electrical demand from stuff like bigger fans…
Dyno Testing the Holley Skyram Intake Manifold
We first wrote about Holley’s Sky Ram intake manifold as an April fools joke. Although many people thought this was photoshop, Holley actually made a working Sky Ram manifold using…
Street Friendly (And California Legal) GD Subaru STI Build! Part Three, Getting Some Green Power With Cobb Tuning
Although our home state, California has great food and possibly the best weather in the county, the regulations that govern just about everything here have made about anything you want…
Ken Block’s Killer Pikes Peak 911!
We got to get an early look at Ken Blocks super awesome 1400 hp, mid-engine, tube frame, unequal length A-arm suspension, AWD, Porsche 911 this week and boy are we…
Street Friendly (And California Legal) GD Subaru STI Build! Part Two Streetable Suspension
In our first story on our practical daily STI build, we worked over the worn OEM brakes with DBA rotors and Hawk Performance Pads adding a Cobb short shifter into…
Street Friendly (And California Legal) GD Subaru STI Build! Part One
If you are a follower of MotoIQ, you are probably familiar with our way of building cars. We tend to build innocuous-looking cars stuffed full of race car technology to…
KW 3-Way Clubsports for the Evo IX. The Ultimate, All Weather, Daily Driving Shocks!
In the past, to get 3-way adjustable damping on your car, you need to invest in really high-dollar sophisticated race-grade dampers. The trouble with this kind of shock is that…
Nightmotorsport Air Oil Separating Billet Valve Covers for Subaru EJ Engines
Subarus like all flat engines, blow a lot of oil out of the crankcase in their blowby gasses. This is always a problem with performance flat engines like Porsche or…
Cutting Big Weight From Project STI With AntiGravity Batteries and MeleDesign Firm
While we are going through Project GD STI, repowering it and upgrading many of its systems, we thought it would be nice to replace the car’s heavy AGM battery with…