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Title: Hello all! Post by: higgy_b5_aeb on December 07, 2022, 07:27:10 PM Hello everyone! Joined to basically gather information and better understand the M3.8.3/M5.9 system and my 557P ecu and hopefully gather enough info to be comfortable messing with it!
1998 Audi a4 quattro 1.8t us spec 5mt currently all stock other than 3" catless downpipe, full 3'' exhaust and no name stage 1 tune |