Some More Parts to Improve the Car...

In my quest to improve my IS-F in the most efficient manner possible, I have been slowly collecting some parts over the past year or so which I thought would bring me the best bang for the buck. Because I haven't been as good at updating this blog as my GT-R blog, I'm going to simply lay out all of these parts.

First -  I decided to replace the OEM halogen fog lights with later year (2011-2014?) OEM LED fog lights - just plug and play...

Before

Much whiter!

And yes my car wasn't clean when I took this photo...

As for performance of LED vs halogen, hard to say really. They are mounted so low and act only to fill in the dark space under the headlights so I think the effect is more of a visual, than performance difference. Oh well, wasn't that expensive and it gives a more modern look...

I had also learned from Yamada-san at CREF (where I had the clear film installed) that when Toyota was developing the IS-F, they found that the large amount of power meant that the rear subframe would actually move and cause some instability, and that this was especially noticeable on a rain slick track. So, Spoon Sports developed the Rigid Collar kit for the ISF.

Just a few collars...

For anyone not familiar with the Rigid Collar concept, here is a video link that describes how they work.

Yes it sounds too good to be true, but yes they work and I will go into more detail in a future post about what they did for my car's handling. I had gotten them for my GT-R and was suitably impressed so the lack of internet feedback on their use on the IS-F didn't bother me.

I had also read on the ClubLexus forum how the Apex'i throttle controller made the car feel much more responsive (but not necessarily faster - but that's ok, I just want something more responsive!). So, I ordered one and the car-specific harness.

From: https://www.clublexus.com/forums/is-f-2008-2014/626697-apexi-throttle-control-installed-i-love-it-d-2.html

In a later post, I'll discuss this part - all I will say for now is, it really is worth getting!

Finally, some bling - I found something in my closet that I had ordered when I first ordered the car, but was not delivered in time for the dealer to install it, a dry carbon fiber rear license plate frame from LEMS.

Two photos from their website (as I was too lazy to unwrap it before handing it Ninomiya-san to install):

Side facing out

Body side

Here is the rear license plate before:

... and now afterwards! 

As you can see in Japan, there is this metal "cap" on the upper left bolt that has to be installed by special tooling (available only at the DMV). So Ninomiya-san had to make a quick trip in order to get it done... but I think the results are worth it!

Now I have to decide whether to splurge on a matching dry carbon fiber FRONT license plate frame and/or a rear trunk lip spoiler...but before that, one more piece of (possibly functional?) bling... stay tuned!

GS-F versus IS-F

So when I had the IS-F at the dealer for its biannual shaken, they surprised me by giving me a very special loaner car for the day - this beautiful black pearl GS-F!!

Nice number plate. As if the driver would forget...

As I had a few chores to run, well, why not use this GS-F? So I promptly got on the expressway towards Tokyo, and onto Kanpachi Dori.

This Aston turned some heads. Not me, though, in this stealthy black Lexus...

My destination being, my usual Nissan dealership. I had to pick up some parts for a project I am doing on the GT-R.

This car looks SO much more powerful and aggressive than any Nissan sedan they had there.

Parts picked up, I stopped by Dino's to see what he thought. He had praise for the looks, but again, failed to be impressed by the ride and the transmission. Of course, German cars are better he said.

Fits nicely in his driveway though.

Me, I loved everything about the car. I thought the IS-F had plenty of gadgets, but in between the heads up display and 4 different speedometer modes, I thought the GS-F was very nice.  The ride is MUCH better than the IS-F, and frankly, the car doesn't feel any slower despite the weight gain.  In fact, it felt just as nimble, likely due to better body rigidity.

And since I haven't driven the more expensive M series BMWs Dino uses as his benchmark... well, for me this could be the one. Toyota quality, even though it costs more here in Japan than back home in the USA.

It fit nicely in my garage, too!

Alas, it was soon time to pick up the IS-F.

Side-by-side, the GS-F looks much more modern. Of course, it IS!

My overall verdict is, a logical next step after the IS-F. Actually, the natural evolution of how a new IS-F based on the current model might be.  Except, getting back in the IS-F, I could immediately sense how much smaller and nimble the car felt. Not quite as refined as the GS-F for sure, as it lacks the leather and Alcantara the GS-F has, along with all the gadgets. Problem in Japan is, these are $120,000 cars!  So that will have to change before I buy one. 

Meanwhile, what can I do to further improve the IS-F to be more like this...

TRD Performance Dampers!

Ok - so it's been a couple of months since I last updated this blog, and although I have spent most of that time focussing on my GT-R - mainly due to it now being a "Speedhunters Project Car" - I HAVE been working on the Lexus as well. For example, these "dampers."

As I had had these installed on my GT-R, I know that they work, despite the loads of skepticism I've seen often on the forums - mostly if not all by people who haven't had these installed on their cars.

http://www.trdparts.jp/english/lexus/isf_ccsp.html

Made by Yamaha, when I fitted the Nismo versions on my GT-R, I immediately noticed a difference -the entire car seemed to ride smoother and handling felt a bit sharper.   But basically, all those micro vibrations (which I hadn't noticed before) were now absorbed by the dampers, making the entire ride seem smoother.

So while I knew that these work, I wasn't quite sure how they would on the Lexus, as it already has a relatively smooth ride.  In fact, the reason I ended up installing these, instead of the retrofit of the 2013 ISF shock absorbers (made by Sachs, vs the Tokicos the earlier cars have), was due to the advice by Ishikawa-san at the local Lexus dealer - the TRD parts have a 1 year warranty while installing the Sachs would invalidate the warranty my car currently has (at least with respect to the shock absorbers).  Whatever!

On the dedicated TRD website for the ISF, they claim:
Rigidity is improved by coupling the left and right sides of the body to achieve a flat and high-quality ride. In addition to firming up the body, these dampers increase the feeling of the wheels on the ground to ensure the chassis performance that enables steering to react linearly.

Here is what TRD claims (from http://lexusboutique.net) for the next generation IS cars:
Borrowed from TRD engineering the performance damper further improve the drivability of your 3IS. The Performance Damper is a chassis damping component that is set in the structural areas of both the front and rear of vehicles. It is a device that controls and absorbs minute distortions and vibrations. Mounted on the front and back of the vehicle, it rapidly absorbs the slight jolts and vibrations that road surfaces present. With this application, car body movements as a result of steering maneuvers are countered quickly, providing increased driving stability as well as a decrease in road noise.

In any case, I figured that I'd eventually install these TRD dampers at some point anyway, so might as well do it now, in the hopes that the ride quality would improve.

So when the car was getting the new front bumper cover installed, I had them also install these TRD dampers (installation requires removal of the front bumper cover anyway!).

My impressions - at low speeds, the car seems, for some reason, eerily more quiet. Was there some kind of low frequency vibration before? Not sure but for some reason the car is bank vault quiet.

Then at higher speeds yes the ride is marginally improved - maybe a subjective 10-15% better, but still not at the all around level of feel that the GSF had with its Sachs dampers.

In other words, I may still have to upgrade to the OEM Sachs at some point.

The biggest difference however was that indeed, the steering felt more direct and precise, with less on center numbness (the area of numbness seems reduced). However, after getting the Ohlins DFVs on my GT-R rebuilt, and experiencing how good those coilovers are, I now realize how much refinement is lacking in the IS-F.... what to do...