Grimmspeed 4G63 3-Port EBCS | 2003-2006 Mitsubishi Evolution 8/9 (057019)

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Evo 8/9 EBCS By Grimmspeed (057019)

A MBC allows you to run higher than stock boost levels by preventing the wastegate from opening at its rated pressure. It does a great job at this but if boost is available under the MBC setting it will give you that full boost. So for instance, you set your MBC to 18psi because from 3000-6000rpm that's what you want. But then say you get detonation with 18psi when you are at 7000rpm unless you are below 16psi. With a MBC, you do not have this control so you are forced to run 16psi through the entire rev range. With an electronic boost controller you could run 18psi from 3000-6000 and 16psi at 7000rpm because you can tune the boost map in the ECU which will allow you to run the maximum amount of boost at every given rpm. This gives you more power throughout the range and better control.

Revolutionizing the EVO boost solenoid market, we have created model specific install brackets that allow you to directly fit our Boost Solenoid into your EVO for a factory fit. No more Zip-tying! We give you the factory fitment you have been waiting for. Staying with the OEM fitment theme, our Boost Solenoid uses a EVO style wiring harness so you can simply unplug your OEM solenoid and plug ours in. No more cutting the oem wiring and crimping wires together!

Also new to the EVO boost solenoid market, we have used ultra low-profile hose fittings to keep the unit as small and clean as possible. The hose fittings are nickel plated brass so you don't have to worry about them snapping off like the plastic hose fittings!

057019 Features

  • Get into Boost Much Quicker (Flows 10% more than most the competition)
  • Plug and Play into OEM Harness (no splicing wire like other EBCS!)
  • Factory Fit with clean install
  • Works Safely with Factory EVO ECU (custom voltage to match ECU)
  • Nickel Plated Fittings as this is Built To Last (not the easily breakable plastic fittings!)
  • Easy to Install and Very Easy to Tune
  • The Only Direct Bolt-IN EBCS for EVO

EBCS Benefits

  • Users can use AN fittings with the solenoid.
  • MAC Valve has completely custom made the valve for us(only MAC valve on the market to be custom made for automotive tuning use).
  • Specifically designed by GrimmSpeed to work safely with the factory EVO ECU (requires tuning) and to reliably handle the vibrations and temperatures of your engine bay!
  • The only direct bolt in design for the EVO. Direct bolt in mounting bracket and hardware included! (specify which model before ordering)
  • Faster response and greater flow than any other valve out there. (by more than 10%!)
  • Nickel plated brass fittings. (unlike the competitors failure prone plastic fittings)


  • 2003-2006 Mitsubishi Evo 8/9

What's in the box?

  • 1 3-Port EBCS


  • Grimmspeed Limited Warranty

Customer Reviews

Based on 34 reviews
Works Great

Works good, just clicks a lot.

Daniel torres
Best price around

Needed an upgraded boost solenoid for my Evo 9 and I needed it fast! As always MAPerformance had the best price and fastest shipping.

Scott k

If you are using your stick EBCS, do yourself a favor and buy this. Steady boost/tapering off smoothly. Must have mod!

Requires a tune!

Scott M
Decent ebc

The EBC is a great step above a MBC but I did have problems getting it to tune with my stock wastegate. After I ordered a new wastegate, the E85 tune and the boost tuning went like clockwork. It does make some chattering noises I have noticed since swapping from MBC to EBC. Drivability is great.

Claudio Sabato
Boost Controller

Had this already on my old evo 8. I will install on every evo. Fees like it spools bit quicker