The TG20 can also be the same motor they use on the Gazoo Racing RC200t.

 

A comparison between a stock 8AR-FTS and the TRD TG20 SPEC B. You can see the size difference of the turbocharger.

 

This article is about the 8ar-fts engine http://australiancar.reviews/8AR-FTS-engine.php

What's interesting is what I read in the last paragraph..

The 8AR-FTS engine had a ‘Stop & Start’ function that enabled the engine to shut down while the vehicle was stationary in traffic to reduce fuel consumption. The ESTEC D-4ST system could inject fuel into one cylinder while it was stopped on its compression stroke, allowing ignition and combustion to occur simultaneously to quickly re-start the engine. As a result, the Stop & Start system for the 8AR-FTS delayed start-up until the accelerator pedal was activated, in contrast to many systems which start the engine when the brake pedal is released.

So is that why we have that awful delay when we floor it from a complete stop? Just asking, correct me if I'm wrong.

 

The engine stop & start feature is something entirely different. The issue with the pedal delay has been an ongoing investigation, but it looks like Lexus has addressed this issue on the new 2019 turbo RC. I am not sure if it's a software or hardware update, but I am hoping something can be done for existing 2.0T owners.

 

Sheddy your on it. Thanks for clarifying champ .

 

That's strange. Is it only me or does my engine restart upon brake pedal release as opposed to what the article mentioned.

 

I'll have to check. Sheddy the guru may know off hand.

 

Sorry, I have a 1st gen IS200t so I do not have that feature. Perhaps someone with a newer model can bring some insight on this.

 

I think the article is not accurate. It refers to the nx200t which has the first implementation of the 8ar.

 

I have the 2018, but I wasn't aware of this start stop feature. Is this really a thing?

 

This feature could be available only on the NX.

 

Start-Stop is more common on European-spec models, and often not used in North America. That may be the case here as well.

Jeff

 

If the article is referring to the fuel-saving feature of the start-stop function, there are two ways the engine starts when it is cutoff. 1) When still in drive mode, the brake pedal is released, engine starts. 2) This is abit complicated, but bear with me. When at a stop light, depress the brake pedal hard to stop the engine, put it into park and release the brake, the engine doesn't start, yep.. even when foot is off the brake pedal. When you shift to drive, release seat belt or slightly tap the accelerator pedal, engine starts and i think that article is referring to this second part whereby even releasing the brake pedal, engine does not startup. (2016 IS200T)