GrimmSpeed™ introduces the most complete and easy to use Subaru WRX, STi, FXT, and LegacyGT 3-Port Electronic Boost Solenoid available on the market. Our aftermarket boost controller allows you to raise the OEM boost levels in a quick and efficient manner. If you try to raise the boost on the weak OEM boost solenoid it will start to become unpredictable and unable to maintain proper and safe boost levels. Using our solenoid you are able to spool your turbo quicker and maintain a rock solid boost level. We have made our solenoid to withstand 120psi, way more than any Subaru will see.
Revolutionizing the Subaru boost solenoid market, we have created model specific install brackets that allow you to directly fit our Boost Solenoid into your Subaru 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 Subaru 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 Subaru 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!
This BCS will handle all your boost control needs no matter what your power goals are.
Easy for your shop or tuner to tune! (Engine tune is required!)
Tuner's comments on our Boost Solenoid
"The GS 3-port BCS provides rapid boost response while maintaining the ability to make acute adjustments via turbo dynamics. While many other boost control solenoids react to adjustments too fast which can make them difficult to control with as much finesse as the stock bleed system. This solenoid can make micro-adjustments at the edge of target boost not only providing better spool, but overall more control. "
"The GrimmSpeed™ BCS is a compact, well designed unit. Its design as a 3-port solenoid provides better boost control then the stock bleed-type style. Often, this enables a tuner to cut mapped wastegate duty cycles in half. This change in WGDC gives a tuner more granularity when tuning, and can yield much improved boost curves. In addition, the 3-port design often significantly improves spool."
Showing reviews 1-10 of 20 | Next
Posted by Andrew Jackman
Very satisfied. They sent me the LGT bracket even thou I selected 2011 WRX but it still worked, just not as clean looking as the WRX bracket. I'm fairly new to modding cars and was able to follow the instructions with no issues! Highly recommend!
Posted by Josh Wulff
Put the bcs on took about 30 plug n play, mounting brackets alittle different on the 05 wagon, had to mount it upside down , but definelty worth the money. spools faster, more boost, no more gitters in first gear... good upgrade
Posted by Nick Meyer
Quick and easy install, very precise boost control (with a professional tune), and excellent customer service. I would definitely recommend this and GrimmSpeed to anyone.
Posted by nick west
Not only am I impressed with the awesome power and throttle response gains, I must say the customer service exceeded my expectations. Love the BCS without a doubt
Posted by Alexander Scott
"my stock setup couldn't give me more than 12 psi no matter how aggressively i set the duty cycles. I replaced the bleed system with this one, and it is awesome. This item gives you so much more control over the turbo. Now i feel the need to dig out my Controls Engineering book to fine tune the Turbo Dynamics for even better response.
seriously, if you are thinking about getting one, just do it. it's worth it, and it takes about 30 minutes to install in the driveway with a leatherman and a 10 mm wrench."
Posted by kenney Suel
Best replacement for OEM bleed system. Perfect fitment, stock location fast, solid boost response.
Posted by Punctual
"got the 3 port solenoid installed this weekend and a retune from keith, running stage 2 with a grimmspeed ewg, and uppipe. Definatley a grimmspeed fan.
Boost hits so fast and along with keiths tweaking to my drive by wire, I'm now going to run over an old lady in a grocery store parking lot on accident from hitting boost in first.
+1 for GS ebcs."
Posted by AWDshenanigans
this is the best mod i have ever done. drives like a whole new car. i recommend this for anyone. not anyone looking to [insert what people are looking to do]. i meany anyone. this should be the first mod you do.
Posted by essimports
"Installed my Grimmspeed BCS last week with my Labonte Meth kit.
She's all tuned and I LOVE it. Boost comes on so fast and it holds rock solid. With my stock VF48 I'm peaking 23PSI and tapering to 19!!"
Posted by Noah
Got mine on last week and had my tuner (Matt@555 Motorsports) adjust for it. It is way better than my GM BCS. I would recommend it to anyone looking for a 3 port BCS!
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