Zoom the image with the mouse


(No reviews yet) Write a Review

5.00 LBS
Calculated at Checkout

Related Products

Customers Also Viewed


For unlimited flexibility and control of your OBDII e36 m52 and s52 M3...

The BMW S52 engine (1996-1999 Single Vanos M52, S52, MS41, MS41.1 88 pin Siemens Control Systems) is an excellent powerplant and great for engine swaps as well as forced induction applications. The Emtron KV8 plug in kit allows for a install and control a robust engine management solution.  

ACE utilizes a Emtron KV8 engine control system and custom patch harness to connect the ECU to the BMW S52 factory engine harness as the base of this kit and has developed a number of solutions to ensure that all systems will operate as if being controlled by the factory engine management.  The ACE S52 ECU kit unit will come with an ACE supplied base calibration for this system. 

Please contact us before ordering to discuss your applcation.  This kit will work for NA, Turbo or Supercharged cars.  The ECU also has comprehensive E85 flex fuel capabilities (additional hardware needed)  

Package Contents: (Package is built to order  - on average it will be assembled and shipped 2 weeks after purchase)

Emtron KV8 ECU

ACE Wire Harness Adapter

2X Bosch (OEM Brand) Ignition Modules

2X Bosch LSU 4.9 Wideband Oxygen Sensors

GM 1 bar MAP sensor (LS1) (can be swapped to a 3 bar for forced induction applications)

OBD1 Hall Effect Cam Sensor

Cam Sensor wire harness adapter

*Please contact us to discuss your application - forced induction applications will require different sensors*


Product Description:

Enjoy full Emtron features and functionality in this fully condensed packaged system from ACE Performance.  

“Finally a fully complete programmable motorsport electronics package for the S52.  No falsely advertised features that are not actually supported, vague feature lists, or other bait and switch ploys”

Support for nearly all factory sensors/components/outputs unlike other systems (see details below).  Instrument cluster, Check Engine Light, VANOS, Sport switch/LED, MAF, Knock control, and more. Utilizing the open and unlocked flexible Emtron platform that offers real support anywhere in the world though its world class dealer network.

Advanced functions allow the Emtron Platform to “latch on” to actual VANOS cam position effectively closing the loop on mapping utilizing layering of fuel and ignition tables, transient config, and more.  No need to settle for questionable mixture, spark knock, and other detrimental situations when VANOS is switched on and off as compared to other solutions.


-Plug in style installation-

  • Install ECU, ignition modules, and Wire Harness adapter in factory ECU Location

  • Route and plug and GM MAP sensor connector into engine bay

  • Route O2 harness and install new Bosch LSU 4.9 Oxygen Sensors

  • Swap original Cam sensor for hall effect version (with wire harness adapter)

  • Reconfigure vacuum lines to factory fuel pressure regulator and install MAP sensor

  • Configure ECU for first start up (using ACE start up guide)

  • Tune engine

Customizing Installation:

Nearly all factory inputs and outputs are supported and connected via ACE Wire Harness adapter.  Nearly all sensor inputs and outputs are populated to run factory components.

Inputs and outputs can then be repurposed depending on the installation requirement by substituting the old input pin with the new sensor input.  



  1. Extra open inputs and outputs allow for installation/upgrade to Electric Throttle Control

  2. Extra open inputs allow raw wheel speed sensors to be fitted for speed inputs to utilize launch control, motorsport traction control, and more.  

  3. If MAF or other inputs are not needed, and all extra inputs re used, then the original input can be re purposed for a Fuel Pressure sensor input.  

  4. The purge valve output can be re purposed if all other outputs have been used up for other extra functions.  IE, boost solenoid output.


A special 5V and Sensor Ground plug on the adapter allows analog 0-5V inputs easily to be installed.  


CAN BUS Support:

Emtron ECU system supports two separate CAN networks.  


CAN Channel 1

This network is dedicated to Emtron expansion devices, dash loggers, and other Motorsport systems.  It is pre-configured and pre-wired to connect directly to the Emtron ELC2 Dual CAN Lambda Controller.  Termination for this bus is facilitated via an external resistor that can be unplugged and used to easily expand to other CAN devices.  This location allows connection of other CAN bus friendly devices to expand on this compact package as well, especially with products like Emtron EIC, Emtron EGT, and more.


CAN Channel 2



Unsupported features:

  • Tank Leakage Detection

  • Factory Oxygen Sensors (replaced with Wideband Bosch 4.9 sensors)



  • Dual Wideband Oxygen Sensor input with Short and Long term adaptations

  • Individual Cylinder Knock detection with Short and Long term adaptations

  • Calibration slot control (Map switching)

  • Advanced Fuel and Air mass modeling (MAF is also supported)

  • Optional E-throttle control

  • Engine DTC protection/limps/failsafes (pressures, temps, etc)

  • Comprehensive ECU logging (up to 500hz per channel)

  • Launch control, Motorsport Traction control (with G-force compensation) - requires additional hardware

  • Customize CAN transport and receive to expand, data log, display, etc

  • True Flex Fuel function (Variable Stoich) - Requires additional hardware

  • Fuel Pressure compensation - Requires additional hardware

  • True closed loop Sequential Gear Cut/Gearshift control - Requires additional hardware


0 Reviews

This product hasn't received any reviews yet. Be the first to review this product!
Write a Review

Shipping & Returns

Returns Policy
If you are not satisfied with any purchase made with Ace Performance, notify us within thirty-six (36) hours of receiving the package. Items may only be returned if they differ from what you ordered (ie. we shipped the wrong part to you) or you suspect there may be a defect with an item. Fitment issues (ie. you ordered the wrong part) are not a valid reason to return an item, and no refund requests due to fitment issues will be honored. To return an item incorrectly shipped to you, or that you believe to be defective, you must obtain a Return Merchandise Authorization Number (RMA #). The goods must be returned within ten (10) days in the same condition and in the original packaging. If the merchandise is damaged, or not in the original packaging, or no valid RMA # appears on the outside packaging, no refund will be forthcoming and you own the original purchase. The customer will be responsible for all shipping charges.

Electronic items are subject to engineering inspection prior to a refund being issued. All electronic items are carefully tested and inspected prior to sale. All items sold by Ace Performance are new unless otherwise specified.

If you believe a product you receive from Ace Performance has any defect, please contact us immediately. In the unlikely event that any issue should arise with your purchase, we are very motivated to locate and resolve the cause of the problem. If a manufacturing problem has occurred, we will investigate the part once it is returned to us, and then check with the manufacturer. If a defect is determined, the defective part will be replaced at no additional cost to you, or if you prefer, we will provide a full refund.

We ship throughout the US. Note that there are restrictions on some products, and some products cannot be shipped.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.