wonder if this will affect aus spec cars!!
AFFECTED VEHICLES
• 2008 MY Subaru Impreza WRX STI
Affected vehicles are identified in the VIN range chart below. NOTE: Some vehicles affected
by this Service Program have already been updated by Subaru. Prior to performing repairs,
confirm coverage for potentially affected vehicles by using the Vehicle Coverage Inquiry in
the Dealer Communication System (DCS).

Model's affected:
2008MY Impreza WRX STI's with VIN#s 8L809681 through 8L837138


Dear Subaru Owner:
We would like to thank you for selecting a 2008 Subaru Impreza WRX STI. At Subaru, we take
pride in our products and are committed to your continued satisfaction. During a quality review,
we discovered that under certain harsh driving patterns, specifically when repeatedly or continuously
operating the engine above the “red-line” (RPM above 6,700), abnormal combustion could
occur resulting in serious internal engine damage in the form of broken piston ring lands. This
abnormal combustion condition is the result of an “over lean” fuel mixture caused by a combination
of fuel cut activation and high turbo boost. To prevent this condition from occurring, Subaru
has developed a modification to the Engine Control Module software logic that will improve
combustion management above “red-line” engine speed. This revised logic will not adversely affect
the peak performance of your vehicle.
WHAT WE ARE ASKING YOU TO DO PROMPTLY
We suggest that you schedule an appointment with your Subaru Dealer as soon as possible to
have the Engine Control Module software reprogrammed to help maintain your vehicle’s optimum
performance and prevent possibly serious engine damage. Your Subaru dealer will perform
this repair at no cost to you. In the meantime, please maintain your vehicle’s engine speed below
6,700 RPM until this repair has been performed.
Please present this letter to your Subaru Dealer on the day of your service appointment.
HOW LONG WILL THE REPAIR TAKE?
The approximate time to perform this repair is 40 minutes. However, it may be necessary for
you to leave your car for a longer period on the day of your scheduled appointment to allow your
dealer flexibility in scheduling other appointments.
MODIFIED VEHICLES
Aftermarket Engine Control Module (ECM) software changes may adversely affect the proper
operation of your vehicle and prevent your Subaru dealer from performing the ECM software
logic update described in this letter. If your Subaru dealer is unable to perform this update as a
result of non-authorized modifications made to your vehicle’s ECM, Subaru will not be able to
assist you until your vehicle is returned to its original condition. If this software update is not
performed or if other aftermarket modifications cause similar engine damage, Subaru will not be
able to assist with any resulting repair costs.
Continued...
Bulletin Number: WVE-15; Date: Aug. 2008 Page
CHANGED YOUR ADDRESS OR SOLD YOUR SUBARU?
If you have changed your address, or if you have sold your Subaru, please complete the enclosed
prepaid postcard and mail it to us.
IF YOU NEED FURT HER ASSISTANCE
To locate your nearest Subaru Dealer, you can access our web site at Subaru.com Homepage and go
to the dealer locator function. Or, you may call us at 1-800SUBARU3 (1-800-782-2783) during
normal business hours. Please call or write (using the address at the top of this letter) us immediately
if the dealer fails or is unable to complete this procedure free of charge.
Your continued satisfaction with Subaru is important to us. This update is intended to assure your
vehicle’s optimal performance. We appreciate your understanding in this matter and regret any
inconvenience this may cause you.
Sincerely,
Subaru of America, Inc.
Notice to Lessors
The lessor of a vehicle who receives this letter is requested to provide a copy of it to the vehicle lessee(s) within 10 business days from receipt.
The lessor should also keep a record of the lessee(s) to whom this letter is sent, the date sent, and the applicable vehicle identification number
(VIN). (For the purposes of this section, a lessor means a person or entity that in the last twelve months prior to the date of this notification
has been the owner, as referenced on the vehicle’s title, of any five or more leased vehicles. A leased vehicle is a vehicle leased to another
person for a term of at least four months.)[/left]
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