APR chip
hmm ... ok ... watever ... All yr needed info down there on their website bud.
http://www.goapr.com/Audi/products/ecu_upgrade_s4.html
http://www.goapr.com/Audi/products/ecu_upgrade_s4.html
www.goapr.com
I personally have the APR programming and I love it. You can switch between programs with your cruise control. They claim you will gain about 70hp and 100tq, which actually feels about right...
I personally have the APR programming and I love it. You can switch between programs with your cruise control. They claim you will gain about 70hp and 100tq, which actually feels about right...
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