Exhaust valves
Advanced
Joined: Apr 2020
Posts: 544
Likes: 219
10th Gear
Joined: Jan 2021
Posts: 10
Likes: 4
From: California
I agree with what some commenters here have said. I ran unplugged for a few months but switched back and I agree that the exhaust was louder and more muscle car like. However, the tone with higher throttle input is definitely different. It's not as pleasing and you lose the higher pitched waling tone which puts a grin on your face.
Intermediate
Joined: Sep 2006
Posts: 471
Likes: 60
From: ON
I agree with what some commenters here have said. I ran unplugged for a few months but switched back and I agree that the exhaust was louder and more muscle car like. However, the tone with higher throttle input is definitely different. It's not as pleasing and you lose the higher pitched waling tone which puts a grin on your face.
Pit Crew
Joined: Dec 2015
Posts: 169
Likes: 71
From: GA
I agree with what some commenters here have said. I ran unplugged for a few months but switched back and I agree that the exhaust was louder and more muscle car like. However, the tone with higher throttle input is definitely different. It's not as pleasing and you lose the higher pitched waling tone which puts a grin on your face.
Advanced
Joined: Jul 2017
Posts: 741
Likes: 330
From: FL
Akrapovic has an exhaust system for the LC500? I know they didn't when I was initially doing my research for catbacks (before I ended up with Armytrix).
Pit Crew
Joined: Nov 2012
Posts: 137
Likes: 108
From: CA
Thank you PPP, in the past I changed my CLS 500 DP, Rear Axle Exhaust and tuned the car. The output was incredible lifting the Torque from 600Nm to somewhere close to 800Nm, but the car was dangerously and nervously to drive. By spending over $10k for SS Exhaust and Tune, the car, the worst is the car stalled several times. For example it started the engine but will not able to put into DRIVE mode.
At the end, I swapped to AMG E43 but sound was not loud, not comfortable car to drive (suspension wise) and cannot be driven relaxedly. Hence LC500, other constraints is this time I like to keep the car as close to oem as possible, for Insurance purpose.
I still have another mod on Air Filter intake flaps on both sides to remain open all the time. This open up the sound even further. Let me know if anyone is interested. Cheers,
Joe
At the end, I swapped to AMG E43 but sound was not loud, not comfortable car to drive (suspension wise) and cannot be driven relaxedly. Hence LC500, other constraints is this time I like to keep the car as close to oem as possible, for Insurance purpose.
I still have another mod on Air Filter intake flaps on both sides to remain open all the time. This open up the sound even further. Let me know if anyone is interested. Cheers,
Joe
I did the muffler valves today and I like it a lot.
The intake valves are vacuum operated. The intake flap is common to the ISF, RCF and the GSF. Folks that have disconnected the vacuum line in other Lexus models have lost power. See this thread:
https://www.clublexus.com/forums/is-...ntake-mod.html
https://www.clublexus.com/forums/is-...ntake-mod.html
Pit Crew
Joined: Nov 2012
Posts: 137
Likes: 108
From: CA
The intake valves are vacuum operated. The intake flap is common to the ISF, RCF and the GSF. Folks that have disconnected the vacuum line in other Lexus models have lost power. See this thread:
https://www.clublexus.com/forums/is-...ntake-mod.html
https://www.clublexus.com/forums/is-...ntake-mod.html
1st Gear
Joined: May 2022
Posts: 1
Likes: 0
From: California
I have an LC on order and will definitely be pulling these exhaust fuses. I have a potentially silly question here but bear with me. How would one actually access the undercarriage, do you need a car lift or can you stick your head under there