King Motorsports Unlimited, Inc. - Mugen Performance Products for Honda and Acura

Baking the Mugen RR Advanced Concept

If you've ever been to one of our Dyno Day events, you may have met Kojima San. He travels out every year from Mugen HQ in Tokyo to visit with us, talk to attendees about their cars, and share news from Mugen. So when this year Dyno Day landed on Kojima San's birthday, we knew we had to celebrate in style. We were also unveiling the Mugen Civic RR Advanced Concept (shipped all the way out from Tokyo) and it made for a great opportunity to commission a cake creation as one-of-a-kind, unique and masterfully constructed as the RR.

We looked to Michael Kinjerski, a legend when it comes to Honda cakes (See some of his other Honda cakes here). His son Dustin is a long time friend of King's too.

Here are the photos and the notes Michael shared with us:


This is the total construction of the Mugen Civic RR Advanced Concept car from baking the cake to prep work to sculpting and decorating, leading to the finished product. You've seen the finished product, now you'll see what it takes to put this cake together.

Baking the cake using Betty Crocker Super Moist:

Wrap after baking then put into the freezer:

Prep the cake board:

Cut out a foam board template to 1/12 scale of the car:

Utilize template to begin stacking the cake:

Layering the cake with frosting against the foamboard template until the car shape is covered completely in buttercream frosting:

Templates to the exact size are made for all 4 sides:

Templates are pinned to all sides and outlined:

Mugen Civic starting to take shape:

The finished product! This cake took about 5 hrs to decorate not including the baking and other prep work. We even added a "Happy Birthday" message in Japanese to Kojimo San. I 'm honored and humbled to do this project and based on the reaction it was well received. Thank you so much for the opportunity!

Kojima San being surprised with the cake at Dyno Day!:

CR-Z Brake Upgrade with DC5/RSX Calipers

At King we love adding performance to the CR-Z. We even had the one-of-a-king Mugen CR-Z: RR Concept Vehicle shipped out from Tokyo for our 2012 Dyno Day.

In our shop recently: We made this CR-Z go fast with an HPD supercharger. Now it's time to make it stop fast as well! On go a pair of rebuilt RSX calipers, Powerslot rotors and Hawk HP+ pads. Rotor size goes from the stock 10.3" to 11.81" with the RSX rotors. Now it stops as well as it goes!!! This is a great upgrade for any CR-Z.

In the Shop: EK Civic Race Car (Updated)

In the shop recently we are preparing an EK Civic SCCA STL race car. First up- TIG welding door bars:

Next- AIM MXL data aq unit mounted in a very cool carbon fiber inlay:

Dashboard mock up. Check out the KMS custom fabricated adjustable steering shaft....

Just a few more bars and this EK Civic STL roll cage will be complete. Next step is all the tin work to separate the fuel cell from the drivers compartment.

Just a few more bars and this EK Civic STL roll cage will be complete. Next step is all the tin work to separate the fuel cell from the drivers compartment.



Finishing up work bulkhead work on the SCCA STL Civic race car. All aluminum panels are hand fit and then bead rolled for strength. The center section is attached with self ejecting DZUS fasteners for easier access to the fuel cell, fuel pump etc. All other panels are pop riveted in place.

The SCCA STL Civic heads to the body shop today for paint. Back in a few weeks for final assembly! Big thanks to Kyle Gessler of Gessler's Auto for the outstanding service!

Call us today for custom roll cages, race prep and fabrication!

In the Shop: Custom Fab Roll Bar for DC2-R

This week we wrapped up custom fabrication on a roll bar for an Integra Type-R (DC2-R).

The goal was a safe and strong roll bar with minimal cutting to the original interior. The roll bar is bolt-in, so removal won't be a headache (unbolt, replace a few plastic trim panels, and we're back to stock).

Specs: 1.5 x .120 DOM, TIG welded and powder coated semi gloss black. The finished result looks factory!

King Motorsports can fabricate top-shelf custom roll bars, cages and more for your Honda or Acura -- give us a call at 262.522.7558!

In the Shop: Porting K Series Skunk2 Intake Manifold

In our shop recently: We put our vertical mill to good use porting a Skunk2 K Series intake manifold for a 74mm throttle body. This manifold is headed for install on a K24/K20, with dyno tuning shortly afterwards.

Our customer Jason S. asked, "Can't this be done on a flap wheel?" The answer is that it is difficult to get the precision to open up the throttle body exactly 4mm with a flapper wheel. We're all about precision!

We are also porting the intake runners.

Here is a close up of the before (right side) and after (left side).

Call or email us to talk about your porting job!

Skunk2 Intake Manifolds

Pics from the Shop: 8th Gen Civic Si Kraftwerks Supercharger (Updated)

In the shop this week! A fun project: 8th Gen Civic Si Kraftwerks SC installation, then tune on the dyno. All the parts are laid out, inspected and ready for installation.

Engine stripped and freon evacuated from the AC system. Ready to start bolting on the fun stuff......

8th Gen Civic Kraftwerks SC install almost complete. A session on the dyno tuning with a Hondata Flashpro up next. More to come....

8th. Gen Civic Kraftwerks SC kit installation complete! Slide in the new fuel pump and then onto the dyno to make some noise. :)

Let the tuning begin! 2010 Civic Si with Kraftwerks SC kit- stock exhaust manifold and exhaust system. Care to guess what the final numbers will be?

The final results are.......320 whp with stock exhaust manifold, cat and exhaust running 91 octane. Nice stealthy & quiet super sedan! Perhaps our customer Mitch can gives us his driving impressions after a few days!

8th Gen Kraftwerks Supercharger:

Dyno Tuning at King Motorsports:

Dyno Tuning rates:

Update 10/29/2013:

A few months ago we installed and tuned one of the very first production Kraftwerks SC kits for the 06-11 Civic Si. At that time using the stock exhaust manifold and exhaust this car made 327whp and 214ft/lb torque. Now it's back, updated with a Full Race 3" exhaust and Skunk 2 Alpha header -the results 352whp and 225ft/lb torque- nice gain!!!

Watch a video from the dyno tuning sessions:

In the Shop: J35 Engine Project

Our next engine development project is brought to you by the letter J!

J35 teardown continues-underneath all that "stuff" there is actually an engine! Complete build pictures and info will be posted as the build progresses. We would like to thank out friends YAWSPORT for this exciting build opportunity!

Update: 10/11/2013:

Cylinder head port work begins our J series engine development program for our friends at YAWSPORT.

J Series cylinder head porting completed for our friends YAWSPORT. Up next, reworking the bottom end.

In the Shop: SOS Turbo Kit for S2000

And on the dyno this week- the new SOS Turbo kit for S2000 with GT3576 turbo....

SOS S2000 AP2 Turbo kit dyno run. Twin Scroll GTX3576R 14.5 lbs. of boost = 393 whp. 10 lbs. of boost = 371 whp

Watch a dyno pull.

Here's a dyno sheet from that session:



Updated Dyno sheet (below): SOS S2000 AP2 turbo kit w/ GTX3576R twin scroll turbo vs. SOS supercharger kit tuned with Hondata K-Pro on the same S2000. Higher peak number with the SC kit, however much better midrange with the turbo. In the real world the turbo would make for a much more fun car to drive with much more USEABLE power.

In the Shop: K-Tuned Shifter, Drag Cartel 003.2 Cams, Turbo B18C1...

More pics from around the shop!


K-Tuned Shifter- Incredible precision and beautifully crafted!


Just installed Drag Cartel 003.2 cams with our King Motorsports 40 degree VTC cam gear and Toda tensioner in this 12.0/1 K20A road race engine. Next up, some tuning on the dyno!

Update: On dyno this week with Ian G's K20A powered DC2. 12/1 compression with Drag Cartel Industries 003.2 cams with our 40 degree VTC cam gear, Hytech header and DC5R intake manifold.

Watch the video from Ian's dyno tuning!

Ian G's K20A powered DC2 race car results 242 whp with a super nice power band and flat torque curve- impressive!

Build Stats:
K20A with 12.1 compression
Drag Cartel 003.2 cams
King Motorsports 40 degree VTC cam gear
Hy-Tech Header
DC5R Intake manifold and throttle body



Intercooler pipe fabrication for our latest turbo project in the shop.

Update: Intercooler pipe fabrication complete, just about ready to head onto the dyno....

Initial engine break in on the dyno begins today for this Turbo B18C1. Once completely heat cycled 2 times we will begin final tuning.

King Motorsports Breather Box (Custom Fabrication): Turbo EM1 Project

In the fab shop this morning: Putting the final touches on this custom breather box/overflow tank.

King Motorsports custom fabricated breather box completed and installed in this super clean Turbo EM1!

Update: 10/11/2013

Almost ready for tuning on our dyno- sleeved B Series 84.5x89 with PT 6235 turbo.

Final touches complete on this Turbo 84.5x89 build. Busy week on the dyno!