B6 s4 engine upgrades?
Discussion
I have an Audi s4 Avant v8 and can't help thinking that its under powered especially considering its a 4.2 but only putting out a similar power to an e46 m3 which is a highly tuned engine, so wondered if there were any mechanical upgrades I could to that would compliment a remap to improve the measly 15hp that engine tuners claim they can get from just a re-map alone? thanks!!
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