part 2 マフラー音 Launch WOT from a dig w/ 2.5” straight pipes no mufflers. Lexus ISF 5.0 V8 fly bys and take off At time of video stock headers w/ cats to 2.5” piping xforce catback w/ mufflers deleted only. Personally would not recommend. Whole interior and occupant teeth rattles/chattering without even having stiffer motor mounts or upgraded headers at this time Note: Can anyone tell me what that “chirp“ sound is from the front??? Is it a belt? Only happens at WOT/High throttle application. part 2 - little more tame even though de cat and headers due to added muffler and helmholtz tubes. #asmr #lexusisf #lexus #v8 #toyota #isf
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