Weird pop sound on my lexus ISF？?
driving my isf on highway today，going around 80mph，then a 370z pull next to me. want peice of my F power. i then tap the sport mode，switch from auto to manual. then lower my gear from 8th to 3rd，on the peddle shift. then i heard the DPA5 Dearborn Protocol Adapter 5
sound on around 4th or 3rd gear thank you in advance.
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