MotoIQ Tech

Tested: KW Suspensions BMW F30 DDC Remote Adjustable Suspension

by Mike Kojima

A few years ago we got to test a sample of KW Suspensions' electronically adjustable DDC coilovers while visiting them at their German global headquarters. We sampled a 3 series BMW coupe on twisty German back roads and on the Autobahn and came away favorably impressed. We were able to easily, and quickly, adjust the suspension from comfortable to firm to match our current driving modd and/or road conditions. 


 

Zestino Gredge 07RS Race Track Tire Test

by Karla Pestotnik

It would be pretty comical if we saw Usain Bolt running the 100 meter dash in the Olympics without shoes. He would most likely not be breaking any world records or winning any gold medals without shoes on. Undoubtedly, a good pair of track spikes has helped Usain gain the traction he needs to push himself forward and eclipse the run in record breaking pace. The same can be said for someone looking to whip up some quick lap times with just wheels and no tires on. A good set of high-performance tires can make or break the handling capabilities of any vehicle. This concept applies even more so on a purpose-built vehicle designed to push the limits of lateral g's around a race track.


Tested: Shoei X-Fourteen Helmet

by Khiem Dinh

A buddy of mine had a brand new Shoei X-Fourteen helmet that he was testing out. He wanted to get a second opinion on it so he asked me if I wanted to try it too. As I’m a cheap bastard and it would take hell freezing over for me to spend my own money on this top-of-the-line helmet, I definitely jumped at the opportunity to try it out!


 

Lessons in Turbo Technology with Garrett - Burst Containment

by Mike Kojima

What is burst containment for a turbocharger and why is it important?  A turbocharger is a system that has a lot of potential to cause a lot of bad stuff to happen to drivers, spectators, and surrounding equipment.  Why might you ask? Well, a typical turbocharger can spin at up to an unfathomable 200,000 rpm for a small frame turbo and a still amazing 90,000 rpm for a large frame turbo!  That is a ton of potentially ass-kicking force. We will show you how much later and it's enough to make you cringe.


 

Fixing Fuel Starvation with the Holley Hydromat

by Mike Kojma

Fuel Starvation is almost always an issue when a high performance car is driven on the track, especially on production cars modified for racing.  Factory type fuel pickups are woefully inadequate for a car with modified suspension and sticky tires when driven on the track.  Just about all of us have been victims of a sudden loss of power due to fuel starvation when cornering hard.  A lot of us have had close calls because of this.


 

PE Engineering's Racing Pedal Box: The Easy To Install Pedal Box

by Mike Kojima

When building a race car, the only way to get true brake proportioning is to install twin master cylinders and a balance bar. If you are not familiar with this sort of setup, we're talking about having a master cylinder for the front brakes with a separate master cylinder for the rear brakes.  The brake pedal activates both master cylinders at once through a threaded rod or balance bar.  As the balance bar is turned, the brake pedal's fulcrum point moves right or left which gives the brake pedal more leverage on the front or rear master cylinder thus adjusting the proportioning. 


 

Evaluating HKS Hipermax SP coilovers on the Mazda ND MX-5

by Mike Kojima

The Mazda ND MX-5 is the latest evolution of the Miata chassis.  We have found it to be an excellent handling car, one of the best and most well balanced cars we have driven.  We have, however, found the car to be too soft in completely stock form to really be fun.


 

Product Development Testing with KW Suspension

by Mike Kojima

If you are interested in the way a suspension company does R&D, take a look at how a typical test session for KW Suspension goes.  We tagged along on the final calibration confirmation of KW's latest 3-Way adjustable Club Sport suspension for the BMW M2.


 

Building the Subaru VA WRX clutch and Flywheel with ACT!

by Mike Kojima

All wheel drive cars are traditionally hard on clutches. With tons of traction, launches involve a lot of clutch slippage. Fast shifting and even downshifting are all harder on the clutch due to the increased traction of 4 wheels.  With this in mind building a daily driver heavy duty clutch for a street car is always a challenge. 

It just so happened that our friends at ACT were wrapping up development of a clutch and flywheel combination for the late model VA WRX when we were at their office and we thought it might be a good opportunity to show what is deep inside ACT's WRX clutch which shares many design features with all ACT clutches. 


 

Building a NASA NP01 Prototype the Right Way with StopTech!  Part 1

by Mike Kojima

Last November we had the chance to drive and evaluate NASA's NP01 Prototype built by Elan. We loved the car and eagerly awaited its availability. Fast forward a few months and our friends at StopTech were able to get one of the first NP01 kits.  Since StopTech's facility was undergoing expansion it was agreed that the car would get built at the palatial MotoIQ mega shop and that we could do a series of articles on what it takes to build a winning NP01.


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