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JHM Manual Boost Controller - BLACK (in car adjustability) for Audi 2.7t
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JHM Supercharger Kit for B8-S5 w/ 4.2L FSI V8, Stage 1
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From: $6,999.95To: $8,144.95
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Improve your turbo response greatly and set your maximum boost limit. This is the lowest cost and most reliable in car adjustable solution without expensive electronics. Note: most successful with our Tuning software.
JHM is proud to be selling this patented design produced by Hallman. This MBC is integrated into a self contained cockpit controller cable system. The self contained cable system will allow the user to control and adjust boost from inside the car. This new system makes it very easy to set initial desired boost level as there is no need to stop the car, open the hood, make an adjustment, and then drive the car and see what boost is. Then repeat the process if boost is not at desired level. JHM has tested over 5 different MBC designs and this one is by far the best. We are only selling them with the Steel ball since in our testing this is what works best with a B5 S4 (there is a ceramic ball option, but not recommended for the B5 S4).
Includes: B5 S4 specific instructions by JHM (will work on any turbo car with minor adjustments to our recommended install procedure) - Manual Boost Controller with 72 inch long integrated cable and Knob for in car control - JHM Provided hardware in addition to the Hallman provided parts to make it an easier fit into the B5 S4 - MBC mounting bracket - 3 feet of vacuum line (not needed for a B5 S4) - Light and Medium Spring - Hallman general installation instructions - Kits are available in Black(Most Popular), Red, Blue or Purple(special order). Use the drop down box below.
NOTE:This kit can also be ordered without the cable, however all adjustments must be done from inside the engine bay setup this way.
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Off-road use ONLY: THIS PRODUCT IS FOR RACING COMPETITION ONLY AND IS NOT LEGAL FOR USE IN HIGHWAY OR STREET VEHICLES OR OTHER NON-RACING COMPETITION OFF-ROAD VEHICLES. BY PURCHASING THIS PRODUCT YOU ACKNOWLEDGE ITS INTENDED USE.
Make | Model | Chassis | Engine |
---|---|---|---|
Audi | S4 | B5 (1997-2002) | 2.7t V6 30v |
Audi | allroad | C5 (2001-2005) | 2.7t V6 30v |
Audi | RS4 | B5 (1999-2001) | 2.7t V6 30v |
Audi | A6 | C5 (1998-2004) | 2.7t V6 30v |
By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)
Vehicle Code § 27156:(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system. Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.
As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).
Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov
Product Questions

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$1,544.95
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