01 William Chang 2013 Kia Optima SX PASMAG

William Chang is no stranger to building cars. Having spent a large portion of his life building JDM, Euro, and American cars, he decided that it was time to venture into something to represent the KDM scene.

06 William Chang 2013 Kia Optima SX PASMAG

At his shop, Concept-3, they hadn’t worked on any serious Kia aftermarket, as the aftermarket support was almost non-existent in 2012 when he first picked up his 2013 Kia Optima SX. This would be their first experiment on KDM modifications.

08 William Chang 2013 Kia Optima SX PASMAG

In its initial stages, as with most Korean car builds in and around that time, the biggest challenge was finding aftermarket parts to support the build in the United States.

02 William Chang 2013 Kia Optima SX PASMAG

After getting some support from sponsors like R1 Concepts, the build began to pick up momentum.

03 William Chang 2013 Kia Optima SX PASMAG

Anyone who immediately wrote them off as a joke for building a Hyundai would soon stop laughing as the KDM sedan went from your average commuter to a full blow daily driven show car.

05 William Chang 2013 Kia Optima SX PASMAG

ESSENTIALS

Owner: William Chang
Location: Brea, CA
Vehicle: 2013 Kia Optima SX
Horsepower: 295hp, 290ft/lbs torque
Club: Concept Nation

SOCIAL
Facebook: William Chang
Instagram: @concept3

ENGINE/PERFORMANCE
Upgraded front-mount intercooler
HKS SSQV4 blow off valve
K&N air filter
Torque Solution throttle body spacer
HKS M45XL spark plugs
Custom powder coated hardware

11 William Chang 2013 Kia Optima SX PASMAG

PERFORMANCE ELECTRONICS
Racepak IQ3S
AEM boost gauge

04 William Chang 2013 Kia Optima SX PASMAG

EXHAUST
JUN B.L. exhaust
Megan Racing downpipe

14 William Chang 2013 Kia Optima SX PASMAG

WHEELS/TIRES
Avant Garde F431 wheels - 20x9.5 +42 (f), 20x10.5 +37 (r)
Michelin Pilot Sport 4 S tires - 225/35/20 (f), 245/35/20 (r)

BRAKES
R1 Concepts 8-piston calipers, 2pc 380mm drilled rotors (f); 6-piston calipers, 2pc 365mm drilled rotors (r); ceramic pads
Motul 660 fluid

12 William Chang 2013 Kia Optima SX PASMAG

CHASSIS/SUSPENSION
Air Force air suspension
Neo Tech sway bars (f/r)
Luxon front strut bar, custom-chromed
Neo Tech camber arms (r)

07 William Chang 2013 Kia Optima SX PASMAG

EXTERIOR
Garcia Factory lip kit
Seibon hood, trunk
MyRide roof spoiler
Concept-3 rear diffuser
KeenDesign trunk spoiler
Gp_Grahpics roll call and decals
Indy Paints front emblem shave

LIGHTING
KDM headlights with FlyRyde demon eyes
Ex-Led taillight blinker with dual reverse light modification with smoke out inserts (Gp_Graphics), interior LED kit
Titan RGB underglow
Sylvania RGB trunk lighting
Center console LED panels

09 William Chang 2013 Kia Optima SX PASMAG

INTERIOR
New-Face shift knob
Recaro Sportster CS w/heard option
KDM dual layer floor mats
Cyphier harness bar
Kia Mobis KDM center console
Hyundai Mobis folding mirror module
Hyundai Mobis K5 door sills

10 William Chang 2013 Kia Optima SX PASMAG

SPONSORS
R1 Concepts, Ultra Dash, Killerwaxx, Jun B.L., Gp_Graphics, Recaro, Michelin

SHOPS
Rob Soto @ Star Automotive, Brea, CA
Andy Romero @ Firestone La Habra, CA

William Chang's Kia Optima is spotlighted in PASMAG #149. CLICK HERE TO ORDER

13 William Chang 2013 Kia Optima SX PASMAG

More Vehicle Features

Reinventing the Wheel: Carlos Molina's BMW E46 323i

In the years we've known Mr. Carlos Molina Jr. we've noted that he never stops moving forward. He is, in a word, a perpetual motion machine of automotive customization. He never rests on his laurels, and is never content to…
Read More

Mother of All Mustangs: Jim Holloway's 2013 Ford Mustang Mothers RTR

Building project cars is an essential part of marketing any automotive product. As a car care company, Mothers needs to go that extra mile to have a head-turning appearance. For 2013, Mothers teamed up with Vaughn Gittin Jr.’s RTR brand…
Read More

Earth Shaker: Mallory Wetherington's 2013 Ford F-150 FX2

In a world dominated by big trucks and big personalities, standing out in a crowd can be a difficult thing for a newcomer to pick-ups. Mallory Wetherington was just that person when it was time to upgrade from her Cobalt…
Read More

Stay Minty: Kendall White's 2013 Scion FR-S

Played out. It’s a phrase we use to describe something that’s overused to the point that some may find the fact that it exists an annoyance. For example: Minions, widebodied cars, Frozen, stock GT-Rs at car meets and even modified…
Read More

White Unicorn: Kouichi Shimada's 1998 Nissan Stagea

It takes guts to cut into a unicorn, but Kouichi Shimada is not a man lacking in determination. He worked two jobs while still at university to afford his dream car, a Nissan Stagea Autech 260RS, and since purchasing it…
Read More