I recently purchased the Joe P IL Series MBC on a whim. I previously had a knock off version of the original design. The new IL or In-Line series of Manual Boost Controllers is comprised of 5 parts. The two body halves, a spring, a ball, and a sealing O-ring. It is a ball and spring setup. One end of the MBC connects to your boost source, which in my case is the nipple directly off of my T-25 Turbo. The other end, which is the larger half and the end farthest from the ball and spring connects to the wastegate actuator. At this end, there is a small pin hole to blead off pressure. The MBC is made from billet aluminum.
To increase boost you "tighten" the two halves together. This acts just liking tightening the screw on the original design. The spring compresses and pushes the steel ball against the boost source inlet, thus raising the boost limit and stalling the pressure to the wastegate actuator. To decrease boost, you "loosen" the two halves for an opposite effect.
A possible concerns in the design are that the weight of the device may cause it twist while driving and thus change its setting. So mounting it should be thought out. Also since you must be able to turn, or twist, the MBC it complicates how you will mount it. As far as accuracy of the device goes, I have found it work far better than the original design I had. Before I had the adjuster screw dialed all the way out and was still boosting high... up into the 18 psi. With the IL I have the two halves threaded together for a few threads and and am boosting right at 13 psi. My boost gauge (greddy p/h) measured both. I also feel more confident that the IL won't fall apart on me as it looks simpler and operates more robustly.
For the $45 price tag, I would say this MBC is a great price and works flawlessly.
Update:
After a year of continued use, the MBC has remained rock steady with now signs of changing from previous settings. I would recommend this product still.
To increase boost you "tighten" the two halves together. This acts just liking tightening the screw on the original design. The spring compresses and pushes the steel ball against the boost source inlet, thus raising the boost limit and stalling the pressure to the wastegate actuator. To decrease boost, you "loosen" the two halves for an opposite effect.
A possible concerns in the design are that the weight of the device may cause it twist while driving and thus change its setting. So mounting it should be thought out. Also since you must be able to turn, or twist, the MBC it complicates how you will mount it. As far as accuracy of the device goes, I have found it work far better than the original design I had. Before I had the adjuster screw dialed all the way out and was still boosting high... up into the 18 psi. With the IL I have the two halves threaded together for a few threads and and am boosting right at 13 psi. My boost gauge (greddy p/h) measured both. I also feel more confident that the IL won't fall apart on me as it looks simpler and operates more robustly.
For the $45 price tag, I would say this MBC is a great price and works flawlessly.
Update:
After a year of continued use, the MBC has remained rock steady with now signs of changing from previous settings. I would recommend this product still.
Attachments
You must be registered for see attachments list
