Some people think the car seats should be as low as possible...

If you are on race tracks and do 10/10 driving , then "YES".

However, with 8/10 driving on public roads I think I do NOT need to sit at lower position at all. (if your car has decent seats)

In addition, public roads are very narrow and crowded (compared with race tracks), it's really not a good idea to sit at very low position...
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I think I really LOVE the 467hp V8 engine and 8AT with sport+ mode in my GSF... (The more I try it the more I like it)

I admit I'm very laggy...(because I'm also very cautious!!!) I spend almost FOUR years in fully understanding my GSF!!! (I also play with my Ohlins DFV suspension)

The good news is I don't get bored with my GSF yet... I'm still using all my mind to live with my GSF and explore its limits...
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Except some downshifts to get engine braking I don't even try to shift gears manually because the sport+ mode on 467hp is already very good... (not to mention that wonderful engine sound!!!)

I also agree that except that tire noise my GSF is very quiet like many other Lexus cars... So, except that intake sound I really have to open the window to hear its exhaust sound...

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Of course, I definitely don't need to be rush to play with my GSF... (I will keep it for at least 10 years and it will also perform like new for at least 10 years)

I'm also still playing with my Ohlins suspension. Recently the weather became colder and the ride also became stiffer. So, I changed the settings from 9(F) and 11(R) to 9(F) and 13(R). The result was the handling was still very good but the ride was much more comfortable...

I think I really set too much damping on rear like what I said before. As a result, even though the rear dampers were already very stiff and the steering input change was small, I might still get some body rolls at the rear because the handling was set to TOO AGGRESSIVE (or too much oversteering)...
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This is the front damper's dyno for my Ohlins DFV suspension


This is the rear
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The spring rates for my Ohlins are 16K(F) and 12K(R)

The spring rates for M4 are 9K(F) and 19K (R)

If you compare the dyno for my GSF and that for M2/3/4, you can find the below results...

---front dampers---
6 click on my GSF Ohlins have more damping force than 2 click on M2/3/4 Ohlins for both compress and rebound

---rear dampers---
6 click on my GSF Ohlins have more damping force than 2 click on M2/3/4 Ohlins for rebound but only about an half of damping force for compress
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So generally the damping forces from GSF's Ohlins are much higher than M4's Ohlins because 6 click(softer) on GSF have more damping force than 2 click(stiffer) on M4... (although the spring rates are higher on M4)

Please be noted that the Ohlins suspension from my GSF was not directly from Ohlins... It's from FIGS.

FIGS received dampers from Ohlins first, revalve the dampers and put Swift springs with those dampers. So, my Ohlins suspension from FIGS was 500USD more expensive than ordinary Ohlins suspension using Eibach springs... (3100USD vs 3600USD)

Recently FIGS also raised the price to about 3900USD!!!

Two years ago, when I ordered the Ohlins suspension from FIGS, I had to wait for almost THREE months!!!

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This video tells us what the natural frequency is...

M4 is lighter but the Ohlins suspension for M4 uses more stiff springs. So, the nature frequency for M4 with Ohlins should be higher than that for GSF with Ohlins...

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Yesterday I drained and filled ATF for my GSF's 8AT...



The task was simple. I just followed the below videos.

One thing I would like to mention is... Most of them could only get about 3 quarts out but I got almost 4 quarts out since I warmed up 8AT a bit before beginning the change!!!


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I also checked Lexus service manual for GSF. It didn't mentioned I had to cool down the 8AT before doing ATF replacement.

Like I said you still have to follow the ATF temperature requirements(45-55C) when you check ATF LEVEL... In addition, the exhaust pipes especially those catalytic converters could be hot. So, be CAUTIOUS!!!
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