Need to breath more life into your engine? Add a TMS Performance Chip! These
chips were tuned by Jim Conforti on the dyno to maximize the engine's efficiency
when using 91 octane gasoline. The result is more horsepower and better torque -
especially in the mid-range of the RPM band. Just because your car is a heavy
5-series doesn't mean you can't make the car faster, more responsive, and
smoother-running. The car really feels more alive! There are several different chip options, please let us know if your car has any modifications.
Horsepower
Gain, 1989-90
+
15 @ 5000 RPM
Torque
Gain, 1989-90
+
15 @ 5000 RPM
New
Rev Limit, 1989-90
7000
RPM
Horsepower
Gain, 1991-92
+
20 @ 6000 RPM
Torque
Gain, 1991-92
+
13 @ 4500 RPM
New
Rev Limit, 1991-92
7000
RPM
Horsepower
Gain, 1993-95
+
22 @ 6000 RPM
Torque
Gain, 1993-95
+
20 @ 4000 RPM
New
Rev Limit, 1993-95
7000
RPM
For 1989-90 525i we need to know the ECU number from the car, and we need to
know if the car is a manual or automatic. Choose the options from the list
below.
If the car is a 1991-92, we need to know the ECU number. Choose the appropriate
option from the box below.
If the car is a 1993-94, there is nothing that we need to know about the car.
For a 1995 525i, we need to know the production date of the car. Please enter
this information on your order form.
Select Product Options:
Base Price: $249.95 (USD) Customized Price: $249.95 (USD)
Please select the available options above, then click show customized price to enable the Add to Cart / Add to Wishlist buttons.
Performance Chips: 1985-1995 Cars 
