IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Turbo lag-IS300 & 200t?

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Old 08-20-18, 09:06 AM
  #16  
MacroZed
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You know, for me, I don't find the lag to be too terrible.

It's the slow-as-hell 8 speed tranny that gets on my nerves.
I think that is the cause for the 1 second delay between stomp and go from a stop.
It's not much better at speed either...it's like it's thinking too much about what gear it needs to be in.
Old 08-20-18, 09:24 AM
  #17  
E46CT
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Originally Posted by MacroZed
You know, for me, I don't find the lag to be too terrible.

It's the slow-as-hell 8 speed tranny that gets on my nerves.
I think that is the cause for the 1 second delay between stomp and go from a stop.
It's not much better at speed either...it's like it's thinking too much about what gear it needs to be in.
nah. the tranny isn't the cause. same trans is used in the 350.

it's just partly due to 4 cyl/turbo lag and partly by design (on purpose).

the trans as far as shifting gear to gear could use a more aggressive shift at redline
Old 08-20-18, 09:26 AM
  #18  
E46CT
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Originally Posted by arentz07
Or, try to get the 300 AWD. Where I live it is nearly impossible to find a 4-cylinder turbo. So if you are willing to go somewhere that experiences snow, you'll definitely find lots of 300 AWD models lying about. Best thing about that is that you get the same V-6 that's in the 350, so you can tune it to make the same power... Not to mention the V-6 sound from the intake sound generator is still there.
for me, i'd just get the 350. prefer RWD on this type of car anyway. doesn't need the extra weight penalty for something i'd benefit from 2% of the time (if that)

plus i'd rather not jerk w/ software. i like driving it out of the box (preference)
Old 08-20-18, 09:26 AM
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Originally Posted by EZZ
The fact remains the V6 is a far better performing car due to the lag. I really wasn't impressed with the Lexus 4 banger especially compared to a comparable engine from BMW and Audi. Not all 4 bangers are created equal.
This is true, Lexus messed up with the tuning of this car. With my BMS tuner it’s right where it should have came stock. I like this car though overall.
Old 08-20-18, 09:30 AM
  #20  
E46CT
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The BMW and Audi 4 are definitely better, with the Audi being the best probably. The 2.0 TSFI in the B9 A4 makes 365 wheel torque w/ tune and minor bolt ons. Very very capable and strong. coupled w/ AWD. i really want one. But i'd probably only do a stage 1 on that..
Old 08-20-18, 10:08 AM
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MacroZed
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Originally Posted by Flash5

This is true, Lexus messed up with the tuning of this car. With my BMS tuner it’s right where it should have came stock. I like this car though overall.
Doh. I can't get the BMS tuner, because California...the state of over-governance.
Old 08-20-18, 10:11 AM
  #22  
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Originally Posted by MacroZed
Doh. I can't get the BMS tuner, because California...the state of over-governance.

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Old 08-20-18, 10:21 AM
  #23  
kimmi
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Originally Posted by EZZ
I really wasn't impressed with the Lexus 4 banger especially compared to a comparable engine from BMW and Audi. Not all 4 bangers are created equal.
That is why I asked the question originally. I heard about the bad turbo lag and knew other companies did not have as many complaints. Surprised by Lexus. I drive a G37 Coupe and a Turbo 4 sounded good for the wife. We will test drive an IS300, but it looks like the wife will be getting a IS350 "F". She also likes Audi, but we keep cars a long time and IMO German cars are for leasing! As to AWD I live in SoCal; we don't even get rain anymore!
On a side note; what ever happened to "Taste of Lexus" events? Too expensive to put on?
Old 08-20-18, 10:28 AM
  #24  
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Originally Posted by kimmi
That is why I asked the question originally. I heard about the bad turbo lag and knew other companies did not have as many complaints. Surprised by Lexus. I drive a G37 Coupe and a Turbo 4 sounded good for the wife. We will test drive an IS300, but it looks like the wife will be getting a IS350 "F". She also likes Audi, but we keep cars a long time and IMO German cars are for leasing! As to AWD I live in SoCal; we don't even get rain anymore!
On a side note; what ever happened to "Taste of Lexus" events? Too expensive to put on?
It's true that German marques have better implementations of the turbo 4 bangers. But that't not the complete story. They have issues too.
I just got out of a BMW to get into the IS300. My Bimmer had a turbo 6 (N55), which is a bulletproof motor with tons of torque and HP, but the ZF 8 speed auto that was in it had the most dreadful dead spot when slowing for a stop and then accelerating. It was AWFUL. The torque converter doesn't engage for a full 2 seconds, at which time, the car snatches your head back like a dragster.
Other makes use the same ZF tranny (like Mopars and Rolls Royce, and they do not have issues like BMW does.

But true.....German cars are for leasing new.
My motto is, never own a German car out of warranty. (Except for BMW E46....I have a soft spot for those, and they are easy to work on).

Last edited by MacroZed; 08-20-18 at 10:37 AM.
Old 08-20-18, 10:35 AM
  #25  
EZZ
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For the price of a comparably equipped 330 with the 4 banger, you can get an IS350 F-sport. The gas mileage is worse but everything else about it is better (handling, smoothness, etc...) I find BMWs have good lease rates but Audi does not. I'm real tempted to pick up an RS3 but would have to get an extended warranty as i don't fully trust the German cars yet.
Old 08-20-18, 10:56 AM
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The IS200t (and newly named IS300 RWD version) have better low end torque specs than the IS300 AWD, right?
So, despite the lag, might the turbo version feel zippier? There were many discussions that the 300 AWD and 350 AWD both feel pokey at the low end,
with the main difference being over 4000 rpm.

2018 IS300 RWD (IS200t):
241 hp @ 5,800 rpm
258 lb·ft @ 1,650 – 4,400 rpm

2018 IS300 AWD:
HP 260 hp @ 6400 rpm,
236 ft-lbs. @ 2000 rpm
Old 08-20-18, 12:29 PM
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The new 3 Series is coming out September-ish. It has a re-engineered chassis, engine, everything. It's going to crush the IS in every metric. Tenfold. Get ready. The new 4-turbo (330) will have 295 torque... stock

(Render) 90% accurate



https://www.motortrend.com/cars/bmw/...totype-review/
Old 08-20-18, 01:11 PM
  #28  
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Originally Posted by E46CT
The new 3 Series is coming out September-ish. It has a re-engineered chassis, engine, everything. It's going to crush the IS in every metric. Tenfold. Get ready. The new 4-turbo (330) will have 295 torque... stock

(Render) 90% accurate



https://www.motortrend.com/cars/bmw/...totype-review/
And it will give you problems after 50k miles. Lol
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Old 08-20-18, 01:17 PM
  #29  
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Originally Posted by RKSTRAT
The IS200t (and newly named IS300 RWD version) have better low end torque specs than the IS300 AWD, right?
So, despite the lag, might the turbo version feel zippier? There were many discussions that the 300 AWD and 350 AWD both feel pokey at the low end,
with the main difference being over 4000 rpm.

2018 IS300 RWD (IS200t):
241 hp @ 5,800 rpm
258 lb·ft @ 1,650 – 4,400 rpm

2018 IS300 AWD:
HP 260 hp @ 6400 rpm,
236 ft-lbs. @ 2000 rpm
Yeah the 300 AWD doesn't really feel punchy till around 3500 RPM, but then it doesn't continue to build power like the 350 due to the detuning. Around 4500 is where it seems to top out. But, there's no lag in the response. I think most people would be happy with it especially coming from the 4-cylinder.
Old 08-20-18, 01:25 PM
  #30  
Sheddy
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Best 200t modification.

Last edited by Sheddy; 08-20-18 at 01:31 PM.


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