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c109 tre jsd-3m surge

  1. C109Riders
    I have read a lot of things about TREs on this site 1. Improve lower gear performance. 2. May cause engine knock/pinging. 3. Improves engine surge. 4. Improves gas mileage 5. Reduces gas mileage. So I wanted to discuss my experience with the JSD-3M TRE. First I definately feel the...
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