Is that for the 200t? You have a link?

 

It's for the 250/350 but will fit the 200t. If you get one, I hope you do another amazing write up! I've yet to install mine because I don't know where I want to hide the black box.

 

Hmm yeah maybe if it was free or very cheap. I doubt it will make a difference in actual acceleration time from a dead stop when floored however I could be wrong. It may map the throttle to open at a smaller pedal angle... giving the perception of better "response" (which is fun I agree) but I think people are complaining about the 200t's inherent lack of acceleration when floored instantly from a dead stop. People don't seem to have this complaint on the NX200t... and what's also funny is the NX200t is AWD and weighs 500 lbs heavier AND has the same 0-60 as the IS200t @ 6.9. Don't think AWD has anythign to do with it because the IS200t can't break traction when floored anyway. I don't get why the 200t doesn't get better times than it does. The 0-60 should be about half a second quicker than it is. The only thing I can guess is Lexus seriously crippled the IS200t in software. The #s don't add up. Car feels good once the initial lag is gone, has good torque and mid range punch. But after that it loses steam.

Here are the NX200t's times by Car and Driver:
Zero to 60 mph: 6.9 sec
Zero to 100 mph: 18.0 sec
Zero to 120 mph: 31.3 sec
Rolling start, 5-60 mph: 7.8 sec
Top gear, 30-50 mph: 3.9 sec
Top gear, 50-70 mph: 5.0 sec
Standing ¼-mile: 15.3 sec @ 92 mph
Top speed (governor limited): 124 mph
Braking, 70-0 mph: 167 ft
Roadholding, 300-ft-dia skidpad: 0.79 g

And here are the IS200t's times also by Car and Driver:
Zero to 60 mph: 6.8 sec
Zero to 100 mph: 19.3 sec
Zero to 130 mph: 41.3 sec
Rolling start, 5-60 mph: 8.0 sec
Top gear, 30-50 mph: 4.4 sec
Top gear, 50-70 mph: 5.1 sec
Standing ¼-mile: 15.3 sec @ 91 mph
Top speed (mfr's est): 143 mph
Braking, 70-0 mph: 171 ft
Roadholding, 300-ft-dia skidpad: 0.85 g

Why does the NX200t weigh at least 300 lbs more but get better acceleration times? it's higher, less slippery in the air, and heavier. And has a worse transmission.


Just a little rant. still love the car.

I hope a tune comes soon and helps some of these issues. Waiting on Bms

 

I'm with you dude..it needs a little more kick!!! It gets scary sometimes when you pull out in front of someone...1.2.3. GO! LOL.

 

I share all points mentioned....especially sad how fast the motor runs out of steam, at first it felt so weird as if i had let off the accelerator or something. So i had to make sure....my first turbo and my last. If this is how Lexus builds Turbo's, then a sad future awaits when the next Gen IS/GS comes to market.

 

I don't feel like it runs out of steam as I feel a constant push (even if it is weak) from 3000/4000 to redline; however, I do agree that this car feels so powerless between 1000 and 3000. I think it's because they've tuned it to mimic a small-displacement, naturally aspriated v6.

I've been thinking about it and I think Lexus added the 1-1.5 second delay because otherwise the 200t would compete with the 350 for 0-60 times. That being said, it is dangerous and infuriating to deal with so I hope a tuner is able to remedy it.

 

Well I have had a few experiences where it does runs out of steam and flooring it did nothing and it does so very quickly. This i find very disappointing and unfortunately did not have the chance to push it hard during the test drives since traffic did not allow that.In fact, my first test drive at a local dealership the salesman complained saying i am driving too fast and i don't own it yet. I merely got to 60mph at the time. Needless to say after the test drive ended, i left the dealership immediately and went to another one where the sales man let me drive without complaints. I wanted to test the acceleration to see if it was sufficient for daily commuting.

I can see your point about the IS350, which is a very unfortunate premise on Lexus's end. Every other competitor 2.0 turbo on the market appears to be better than this one, it fails in every category and to top it off efficiency is mediocre at best.

 

I think it's like how Porsche purposely guts the Cayman so it doesn't overtake the 911. I've talked about it previously, but the 8AR engine is bizarrely lukewarm considering Toyota knows how to make good turbo engines (eg: 2JZ). I think if the delay were removed, the 200t would be more competitive with turbo-4's from the competition.

I think the efficiency is dependent on driving style; because I redline my car all the time, I get an amazing 19.9 MPG whereas the normal consumer is probably averaging 27 MPG. I read somewhere that turbo cars are inefficient while in boost, but efficient when outside of the power band.

 

I'm still trying to figure out why the 200t engine is on paper identical to the BMW 328i engine or even 320 engine (same engines) but doesn't accelerate nowhere near as fast. Mercedes's C300 2.0 Turbo engine has nearly identical hp/torque #s, weight, etc and does 0-60 in 6.0 seconds. About a second faster than the 200t. I'm starting to think Lexus did this on purpose to not screw with the 350. Imagine if the 200t did 0-60 in 5.9s and the 350 in 5.7.

What does this mean? (in my head) well perhaps our 200t engines ARE capable but were neutered with software. Which makes me hopeful for BMS's tune. Maybe it makes a 241hp and 258lb ft torque BUT how long does it make that power? Over the entire curve? Or does it peak quickly? This car should do 0-60 in 6.4-6.5s. It's hard to tell but from the dyno it looks like the BMW stays flatter longer. Basically it puts down its power over a wider range. I could be seeing things though. The plots below aren't similar in terms of how its displayed.

Comparisons of stock cars on the same dyno by BMS:

BMW 320i 8-Speed Auto 0-60 7.1s (8 lbs boost)
183 Rear Wheel Horsepower
209 Rear Wheel Torque




Lexus IS200t 8-Speed Auto 0-60 6.9s (17 lbs boost)
203 Rear Wheel Horsepower
229 Rear Wheel Torque
(With this "alpha" tune from BMS, it puts the IS200t at 269HP and 290 lb-ft torque) assuming 15% driveline loss on 93 octane. Not bad.

 

I talked to a Lexus tech over the weekend. He said it is a strange turbo system the way it is plumbed on the back side of the motor. There is some truth about not wanting it faster than the IS 350...hence the software tuning in the ecu. I bet. If it had 300hp...it is what it deserves to complement the cars other great features!!

 

on IS200t the "motor" (it's an engine not a motor) is turned for RWD so its on the drivers side--not front or back. So really its not that strange.

 

I am already bored of the car because of the turbo, runs out of steam just when you finally start moving...that's the strangest thing about it. I am always expecting more torque just when it tops out...very artificial.

 

I am thinking of pulling the trigger on the racechip stage 1. what do you guys think? heard anything bad?

 

Never heard of it, let us know how it works...

 

17 psi is a bunch of boost. The turbo must be rather small.