Product Features

• A completely universal solution for all turbo cars

• Easy to install compact design works on any turbo

• Controls boost spikes with ball & spring design

• Lightweight ceramic bleed ball for fast response

• Precisely adjust boost from spring pressure to over 30psi

• In-house CNC machined aerospace grade aluminum 

• Great looking black anodized finish

• Attractive stainless steel mount bracket and hardware

• ¼” barb fittings for easy connection


IE Billet Manual Boost Controller


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Simply raise, lower, and control the boost pressure of your turbocharged vehicle with the finest manual boost controller available. Our engineers have developed a unique MBC design that precisely adjust boost levels above the wastegate pressure while reducing spool times and eliminating boost spikes.

Product Summary


The IE MBC is an easy to install compact unit, less than 1 ¾” in diameter and 3.0” long that can be custom installed virtually anywhere in the engine bay. To make the IE MBC even more universal, each boost controller includes a stainless steel mount bracket with hardware and ¼” hose barb fittings and three feet of matching silicone hose to make installation simple for traditional turbo setups.



vacuum diagram


With some careful engineering, we were able to design this unit to be adjustable from the base wastegate pressure to 30 psi+ without having to swap internal components for higher boost setups. That means the IE MBC is truly a one-size-fits-all unit and can be used with nearly any aftermarket turbo setup. Many boost controllers available simply bleed off boost pressure to the wastegate, which works to bring boost pressure up, but does not eliminate the wastegate from partially opening before the desired pressure is met. This makes for slower spool time and spiking boost pressure. With boost spikes, power delivery is not smooth, nor is it held until redline. We designed our MBC with a ceramic ball and a spring, so you can expect boost control to be linear and smooth with no concern for spiking. This style of boost controller does not allow any boost to the wastegate until the desired pressure has been reached, keeping it completely closed up until that point. Quicker spool time is seen due to that, making more power early on. The IE MBC uses a ceramic ball versus a steel ball, which can move much quicker and let boost through faster due to the material being lightweight when compared to steel. It is critical to have the ball move quickly, as it makes boost control nearly instant and keeps the boost pressure consistent.



  • Universal design that will work with any OE or aftermarket turbo
  • Will plumb into both internal or external style wastegates
  • A boost controller can not adjust boost lower than the wastegate spring pressure
  • If you install your boost controller on a modern ECU vehicle, you may receive an overboost fault by turning the boost pressure above OE settings.  You will need to run a software tune to allow manual boost control in this case.  


  • How do I increase or decrease the boost with the IE MBC?

Simply turn the knob clockwise to increase boost and counterclockwise to decrease boost.

  • How high can I turn up the boost with the IE MBC?

We have designed this unit to be adjustable to over 40psi, but it will depend on the spring installed in the wastegate. If the spring is soft, the wastegate can be pushed open from exhaust pressure at higher boost levels and bleed off pressure.

  • Will this fit my car?

This unit is designed to be completely universal, so it can be used on most aftermarket turbocharger setups

  • Can I turn the boost down below the base pressure?

No, the lowest the boost can be turned down is to the wastegate spring pressure.

  • How much will boost be increased with each turn of the knob?

Each 360-degree rotation of the adjustment knob will increase boost pressure approximately 2 psi.

  • How do I mount my MBC?

Included with each IE MBC are a stainless steel mount bracket, two M6 button head bolts, two Nylon lock nuts, and washers. You can drill holes on any unused bracket, or mount to any panel within the engine bay.

  • Can I use this with an internal wastegate? External?

Yes! You can use this unit with any wastegate setup, internal or external.

Share your thoughts on this product Write a review
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Amazing Product
Amazing product, Hardware is top notch, doesnt open the wastegate until the boost level is met. Only thing I would say is give us a couple more feet of tubing. As always amazing product.
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Good Quality
Great quality and function! I think it could be lighter but I like the size of the knob. Please make a 72" relocation kit to put the knob on your dash, and i will buy one?? (just at JHM did with the Hallman design). That red knob would look great on my dash!!
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