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I'll play as I just ordered some DSS upgraded axles to replace mine. And I know a number of locals who are having CV clicking sounds at stock or near stock power.
Car: FR-S '13
Miles: 23,000
Use: Daily with frequent spirited driving
Suspension: ~3" (Ksport Kontrol Pro with rear height approximately 1/4" from lowest height)
Power: 420HP/310TQ @ the crank, 360WHP/260WTQ
Forced Induction: Yes
Other: Car has never been launched, throttle is typically "rolled in". Gears are never slammed.
Axle broke story: While out on a spirited drive I was driving in a decreasing radius turn which resulted in a near full suspension droop on the left. I hit a small dip in the road while starting to ease the throttle in (20-25% throttle) in which my rear sagged near full drop. CV completely destroyed immediately. Car felt like I slammed on the brakes, my seat belt locked against my chest.
Apparently it had been clicking prior to it breaking but I did not hear it. A friend who was behind me at the time said he thought the sound was normal as his was doing the same thing (he has significantly less horse power and is slightly higher ride hide than me, and frequents autox events).
From what I can tell it seems like more of a suspension geometry problem to me. The fact I am still on a factory clutch with over 10k FI miles with frequently spirited driving makes me believe I am quite easy on my transmission / axles. I however am not easy on my suspension.
I have only spun the tires off the line once when replacing my tires at a significantly lower horse power rating. This was months ago. No clicking seemed to happen until a few days prior to the CV shattering.
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