With headers, output rises by 56 horsepower and 34 pound-feet of torque at the crank. Turner states that with the addition of cams the output over stock goes to 76 horsepower and 50 pound-feet of torque at the crank. Dynographs below verify the output.
Turner blurred out areas of the graph for confidentiality purposes on a race car (those who seriously track their M3 will be most interested in this ECU) but two Dynapack dynographs are included to verify their horsepower claims.
The ECU comes with base maps and can be further customized. Here are the advantages as stated by Turner Motorsport:
The advantages of the Bosch Motorsport system are enormous:
+ immediate power and torque gains
+ all-in-one system with direct plug-in to existing wiring and dash cluster
+ full access and control over engine mapping
+ low cost compared to other engine management systems
+ no interference or limp modes from factory ECU
+ base map file included (the Bosch ECU can hold 3)
+ access to upgrade-specific map files and updates
Is it worth the $6k asking price? For hardcore track guys limited by the stock ECU and trying to get every last horse at every part of the rev range, absolutely.
Pictures and graphs below.
Stock versus Bosch ECU, headers, and CSL airbox:
E46 M3 racecar with Schrick cams, headers, exhaust, aFe intake, pulleys, and the Bosch ECU: