Audi Engine Control Unit (ECU) Modifications

Engine Control Unit (ECU) EPROM Modifications

1986-88 5000TQ, 5000T, Early 1989 Model 200T/Q
Single Knock Sensor MC engine, 7:8 to 1 Compression Ratio
1.8 bar upgrade
EPROM boost map values are increased to 1.8 bar in the mid RPM range. Custom timing maps are developed using a data acquisition system for improved torque output. Fuel maps are optimized using a 4 gas portable exhaust analyzer for correct mixture under high boost conditions to prevent overheating of the exhaust and turbocharger. Overboost fuel pump safety cutoff is raised to operate at 1.95 Bar.
$425 including the stiffer Waste Gate Spring and 2 Day return delivery in the USA

1989-90 Turbo Quattro, 1989-91 200 Turbo
Dual Knock Sensor MC engine, 8:4 to 1 Compression Ratio
1.75 bar upgrade
Increase EPROM boost map values to provide 1.75 bar in the mid RPM range. Custom timing maps are developed using a data acquisition system for improved torque output. Fuel maps are optimized using a 4 gas portable exhaust analyzer for correct mixture under high boost conditions to prevent overheating of the exhaust and turbocharger. Overboost fuel pump safety cutoff is raised to operate at 1.95 bar.
$425 including the stiffer Waste Gate Spring and 2 Day return delivery in the USA

For ordering and delivery information , contact us by email
Info at SJM Autotechnik

PLEASE NOTE THE FOLLOWING:

These ECU modifications are only for off road/racing use and may not be legal for use in your state. Running higher boost levels may compromise reliability as the condition of the engine prior to any modifications can not be accurately determined. Any engine damage that occurs from running higher boost levels is the responsibility of the vehicle owner.

It is important that you ensure the ECU Waste Gate Solenoid boost control system, the Wide Open Throttle (WOT) switch, air temperature sensor and knock sensing system are working correctly, BEFORE you install a stiffer 1.8 bar Waste Gate Spring after you have installed the 1.8 bar modified ECU.

The stiffer 1.9 bar Waste Gate springs will make the turbo produce higher boost even if the ECU Waste Gate Solenoid boost control system, or the knock sensor system are not working correctly.

Go to the "ABC's of Running High Boost" page for details on checking the ECU systems mentioned above.

NOTE: Running the engine with higher boost without the correct fuel enrichment, without a working air temperature sensor or without the knock sensing system can damage the engine from detonation (pinging).

In most cases "light" engine pinging will NOT be heard by the driver.

Sustained pinging can eventually lead to head gasket failure or piston ring land damage.

Replacement Waste Gate Diaphragms

German made OEM wastegate diaphragms are available

PLEASE Contact Us for price and availability informatino.

For Canada customers, please contact us at Info at SJM Autotechnik for your International shipping Costs.

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