Great Product, mounting options limited
Feels good in the hand, solid quality, and all the parts fit really tight plus super wide and precise boost control. My only gripe is that the mounting piece that with it feels limiting. But maybe thats just me. My engine bay is quite tight, keep that in mind If your buying and don't have alot of real-estate.
Manual Boost Controller
Really nicely machined piece with clear markings and a super sweet detent system. I'm a mechanical Design Engineer for a living and I really like this design and the machining on this part.
Mike G.
Manual Boost Control
I really like the construction of this product. It is well built and designed. If you are considering getting one, dont hesitate to buy this one.
Nice holy s!@#
Woke my 7.3 right up. Vary easy to install. And it matches the paint on the truck.
love it!
Looks great in engine bay. Easy to hook up and adjust will be ordering more for other cars I work on!
Great Product
Ive officially now owned 2 of these. one on a high (30+psi) application and one now on a lower ~10psi application.
Boost control is accurate regardless of pressure. Consistent too.
Solid design, not cheap or flimsy or weak. Even on "0" it delays the gate slightly and helps spool on my current vehicle.
Anyone looking for an MBC I point to this product.
Must have with turbo
Ordered this one for a spare my other locked up when I called they said send it back for a replacement, long story short just a little fogging oil and the next day it worked perfect. This is on a jet ski in Florida so maybe the salt air after a couple of years without turning it so now I have two. Customer service second to none with a great product.
Smart Purchase!
This MBC replaced one I made from the plumbing & hardware departments of mu Local Ace Hardware. It worked but would not hold the full boost. I have an Apexi AVC-R but decided to with the Grimmspeed MBC because of the complexity of the AVC-R I decided to go with the Grimmspeed. Glad I did - easy to install, predictable adjustment, holds adjusted boost level, no electrical hookups required.
Simple MBC to tame a beast
Had to purchase this for an emergency install, First point is that GrimmSpeed was able to get it to me the next morning/overnight which was awesome.
Install done on a 2013 Veloster Turbo.
The purpose of my purchase was to get a tune under control and I needed an MBC rated for at least 25lbs. While we worked on the maps we were hitting limp mode from overboost conditions so this was used as a safety measure now, and then for a better controlled tune later. Install was simple, not rocket science at all and the video they provide is already all you need. There isnt a lot to say other than this was a simple solution with an easy install, and easy to adjust. While they do emphasize the 'clicks' I have trouble both hearing and feeling them, but they are there. I have tested a range of 19.5Lbs to 23.5Lbs and monitored with the TORQUE app, each click is roughly 1/4 of a lb of boost. The MBC feels solid, device is annodized, not painted which is nice. Personally, I wish there was less grafitti on the top.
Total install, adjustment, and testing time was about 1 hour.
-VSport United-
TheGeekFreek
grimmspeed mbc
Outstanding product. Takes seconds to install. And minutes to tune to the precise psi needed. No boost creep or spikes. I recommend this product to all buyers. Thank you grimmspeed!
It works perfect!!
With a new and bigger turbo upgrade for my 7m-gte....Grimm Speed MBC is just right to handle that big boost...running at 12-15 psi
Just as advertised
Works just as advertised. Had a TurboXS manual boost controller before and was not half of what the GrimmSpeed boost controller is. When I had the TurboXS boost controller, it was so Inconsistent that I just went back to adjusting my boost by the spring. With this GrimmSpeed boost controller you have great adjustablilty, plus the boost comes on stronger and faster then just running a spring. Great product, one turbo cars have needed for years. Thanks GrimmSpeed
Fantastic
I was running no controller only the wastegate spring. This forced the boost to come on earlier and harder. Great little product.
Simple wiht good quality
The Grimmspeed manual boost controller are made with good quality. The supplied bracket made installation a breeze. It even comes with a piece of hose witch came handy under the instalation.
5 Stars
Grimmspeed Manual Boost Controller
Works flawlessly and it's super easy to set up!
I don't like it I LOVE IT!
Product is simple to adjust and with the ball bearings in there you can really feel the adjustments you're making. Besides the ease for adjusting it looks great!
Great price, significant gains, highly suggested
The price is fantastic. The quality seems good. I had no problems with installation. I'm now pushing 5.25 more PSI! Wohoo!
top quality
Awesome product. Works great. Easy to set up and adjust. Stays consistent.
Awesome product
I bought and adjusted the mbc.Its design and quick acting performance make it unique in the mbc industry. The scales on it also differs this mbc from others. It is very east to install and use.
Manual Boost Controller
I bought the Grimmspeed manual boost controller. I really liked the features of adjustability on this manual boost controller overt the others I looked at. So far so good been holding pressure real nice. I am using it for my low boost Honda Build. Holds 10psi just fine no spikes.
I like it
The controller is a very nice design , easy to use , and install , I use it on my Buick Grand National ,
Great Quality
I've ran the 3 port from you guys for several years with no issues. After hearing the opinion of others with manual controllers and seeing the half price factory 2nds, I just had to try one out.
This makes it so easy to adjust boost. Never spikes, and hits my targets immediately. As much as i liked the 3 port I like the immediate response from this one even better on my Daily Driven 450whp Forester.
Exactly as Advertised
Great quality product! Set it and forget it with this one. The scale helps with setting your ideal boost and very easy to manipulate if you're playing with the boost level.
Does exactly what it's told
It is a spring to reduce the air pressure that either the boost control solenoid or the wastegate sees. It works precisely in that manner, as my BCS in my '02 WRX had stopped working so this being cheap I threw it in with it performing as it should. No complaints here!
Grimmspeed Quality
"I'm planning on running a hybrid boost control on my 2003 WRX with the Grimmspeed 3-port, and purchased this MBC for the project. I've had nothing but good experiences with the 3-port EBCS, and so it seems this MBC is of equal quality. I ran the MBC by itself to test the device and the boost control is fantastic! The MBC adjustments are nearly exactly what GS claims: 4 PSI per rotation. I'm looking forward to the performance when running the GS EBCS and MBC in conjunction. The unit comes with all the hardware fittings which is great.
The only suggestion I have for Grimmspeed is to add an in-cabin adjustment capability like the Hallman RX Pro. However, for quality, adjustment, and price, the GS unit is clearly superior. Great product yet again."
The Best
Hands down the best boost controller i have ever used! Highly recommended!
