Renntech is a tuner company out of Florida that's been modifying Mercedes AMGs for years. It does some fantastic work, as evidenced by the sound clips below.
Some of the company's best products are its upgrades for the SLS AMG. We didn't think that naturally aspirated 6.2-liter V-8 could sound any better, but thanks to some exhaust work and a tune, these cars make an absolutely brutal noise. Here, listen for yourself. And make sure to turn the volume up.
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