GrimmSpeed Boost Solenoid - EVO 8/9 2003-2006
The GrimmSpeed Boost Controller Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your factory computer because it is designed to draw the same amount of power as the factory BCS but flows better and reacts faster. It plugs in and requires no splicing nor soldering. With the included bracket, you can bolt it in, plug in the connector, and start tuning for faster boost response and increased boost pressure. Planning on returning the car to stock? Simply reverse installation.
Why run an Electronic BCS over a Manual Boost Controller? 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. 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 allows 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, GrimmSpeed has created model-specific install brackets that allow you to directly fit their boost solenoid into your EVO for a factory fit. No more zip-tying! GrimmSpeed's Boost Solenoid gives you the factory fitment you have been waiting for.
Staying with the OEM fitment theme, their Boost Solenoid uses an EVO-style wiring harness so you can simply unplug your OEM solenoid and plug GrimmSpeed's in. No more cutting the OEM wiring and crimping wires together!
For this unit, GrimmSpeed has used ultra low-profile hose fittings to keep the it 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 OEM plastic hose fittings!
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