Throttle Body Rebuilds for 4G63 Based Platforms

Rebuilds available for DSM, EVO 1-9, Galant VR-4. and 3SI platforms.


Custom 4G63 Race Engine Assembly

Custom DSM and EVO 4G63/4G64 engine specific race builds available.


Bead Blasting Services

Aluminum oxide, Glass media, and Plastic media blasting services available.


Surface Treatments

TMZ Performance offers various types of surface treatments including shot peening, cryotreatment, and REM Isotropic surface polishing.

TMZ Performance Rebuilds Mitsubishi DSM, EVO, and 3SI Platform Throttle Bodies Too!

***You will need to ship your core throttle body in for these services!***

Rebuild pricing varies based on model =

$150.00-$170.00 + Shipping Costs

If you are sending in a throttle body, please download / print, fill out, and send in this form with your parts.

Mitsubishi Throttle Body Rebuild Customer Information Sheet Template .pdf Download

  • We Specialize in rebuliding all 4G63 and 6G72 Mitsubishi throttle bodies including:
      • 1990 Non-Turbo 4G63 Eclipse/Talon/Laser
      • 1990 Turbo 4G63 Eclipse/Talon/Laser
      • 1991-1994 Non-Turbo 4G63 Eclipse/Talon/Laser
      • 1991-1994 Turbo 4G63 Eclipse/Talon/Laser
      • 1995-1999 Turbo 4G63 Eclipse/Talon
      • 1991-1999 6G72 Non-Turbo and Twin-Turbo 3000GT / Stealth 3SI Platform
      • 1992-2006 Turbo 4G63 Mitsubishi Evolution 1-9
      • 1987-1992 Turbo 4G63 Mitsubishi Galant VR4
      • 1991-2004 Mitsubishi Montero Applications (Please specify VIN number, or exact year, model trim, engine code)
  • If you are experiencing idle surge, boost leaks, RPMs ramping up or down, or are unable to control your idle due to worn out gaskets, seals or BISS screw, you are in need of a throttle body rebuild.
  • Send us your throttle body for a full service rebuild!  Be sure to include your sensors with the throttle body, and they will be tested for no extra charge!  Prices do not return shipping costs.

Each throttle body rebuild consists of the following steps and new parts:

  • The throttle body is fully disassembled and degreased.
  • The bare throttle body parts are then bead blasted using plastic or glass bead media to prevent etching of the throttle body shaft or bore.
  • The bore is cleaned and inspected.
  • The shaft is cleaned and inspected.
  • New heavy-duty high-pressure shaft seals are installed.
  • New Base Idle Set Screw (BISS), BISS O-ring and BISS screw cap installed.
  • New Fast Idle Air Valve (FIAV) waffle gasket installed.
  • NOTE: The 1990 DSM Fast Idle Air Valve (FIAV) gasket is discontinued.  3 remaining in stock.
  • FIAV fully disassembled and degreased.
  • FIAV blockoff plate installed with new Hex-Cap high-capacity black-oxide finish Steel fasteners (optional upgrade for $30.00 for 1991-1999 DSM throttle bodies only).
  • New Idle Speed Controller (ISC) O-ring.
  • New ISC and TPS Sensor Fasteners.
  • Test all included sensors per factory specifications, and install any sensors supplied.
  • Include New Mitsubishi OEM inner and outer throttle body gaskets.

We no longer have core throttle bodies for rebuilding, you must send in your throttle body for the services to be done.

Please contact us at with any questions you may have about our services!