[Atomic_Dog]

I was driving our 2.0T and needed to change lanes at a stop light. A car was coming, but far enough that if I was quick on the gas I could get into the next lane (I was completely stopped).

What I did not expect was a large delay before power hit. The car was so slow off the line, but then it burned rubber once the turbo hit. Just the weirdest power curve. I am used to my ram with 5.7 v8. I am going to have to learn how to drive this thing. Never had a turbo car before. I assume this is completely normal for turbo charged cars.

 

[dtech]

normal . When you want to discuss turbo lag - early turbos in the 1980s are good examples - I had a 1986 Saab 2.0T with a big garrett turbo on it - living at 6k altitude and on a hot summer day with AC running you could catch a few winks waiting for boost to build. A car mag once compared early turbo lag to slowly stretching out a rubber band, but when released - snap .

Vastly improved these days - but you will need to acclimate coming from that big displacement V8.

 

[dtech]

I should say normal for a small displacement 4 cyl turbo - go test drive a Ford ecoboost 3.5l or the Genesis V6 - both twin turbos and you will be in for a nice experience. A bit more displacement with a turbo does matter.

and I might add this is the reason why a number of makers Subaru, Mazda come to mind as well as Hyundai Theta III - having a 4 banger with 2.4 , 2.5 l . this helps to move 4,000 lbs from standstill.

 

[Red Raspberry]

Get a throttle controller.

 

[ZerosweeT]

In my opinion it doesn’t just have turbo lag. There is some type of transmission lag as well. Hard to explain but it doesn’t feel like it’s all the turbo.

 

[Packard8]

In my opinion it doesn’t just have turbo lag. There is some type of transmission lag as well. Hard to explain but it doesn’t feel like it’s all the turbo.

I agree, my Sonata 2.0T only does this intermittently. Most of the time I get pretty instant takeoff from a full stop, other times the dreaded "Dead Pedal Lag". I think it has something to do with the ECM? In "Sport Mode" the throttle response is more sensitive and it happens less frequently.

 

[Xsolara]

If you floor the gas pedal you get the lag....try 3/4 depression and it does help take off

 

[Route66]

When I had my 2017 Santa Fe Sport 2.0T it would burn rubber in Sport mode if I wasn't careful. There was absolutely no lag whatsoever. In fact I had a Ford Cobra that was itching to race from a stoplight and when the light went green I smoked the tires and got a two car length lead on him in a heartbeat. Put a smile on this 75 year old grandpa......

 

[Packard8]

It could also be traction control in the ECM. I have a Ram/Cummins pickup and the ECM "detunes" the engine on takeoff, causing the "dead pedal" feel. They do it to save the transmission and keeping the 800 ft lbs of torque from tearing the driveline apart.

 

[Lsica]

I was driving our 2.0T and needed to change lanes at a stop light. A car was coming, but far enough that if I was quick on the gas I could get into the next lane (I was completely stopped).

What I did not expect was a large delay before power hit. The car was so slow off the line, but then it burned rubber once the turbo hit. Just the weirdest power curve. I am used to my ram with 5.7 v8. I am going to have to learn how to drive this thing. Never had a turbo car before. I assume this is completely normal for turbo charged cars.

Curious - when did you get the vehicle (wonder if its a problem with earlier vehicles/resolved with more recent ones) and where are you (mountains or lower elevations, wondering if it's a problem with thin air like what occurred at the 2019 Santa Fe launch in Utah)

 

[PMCErnie]

if you floor the gas pedal you get the lag....try 3/4 depression and it does help take off

Exactly! I have no problems whatsoever.

 

[deadrx7conv]

If running regular, try premium fuel. You might just have too much knock sensor interaction. All that anti-LSPI programming is working against you. If already running premium, uncork the intake/exhaust to free up that turbo.

 

[charlescrown]

I think Packard8 is on the money with this one. I find my I30 CRDI does the same thing and changed my driving style in this type of situation. I found out like you when I turned across oncoming traffic and thought OMG this is going to end up bad. All was Ok. Try slowly pushing the pedal down instead of mashing it and you will be pleasantly surprised.

 

[Red Raspberry]

Get a throttle controller. Small turbos should spin up quickly but run out of steam at higher rpms. Not have lag at low rpms.

 

[Packard8]

If running regular, try premium fuel. You might just have too much knock sensor interaction. All that anti-LSPI programming is working against you. If already running premium, uncork the intake/exhaust to free up that turbo.

Quite possible, especially if the car has the LSPI ECM update. It may be overly sensitive to slight ignition knock and pulling too much timing to compensate.

 

[Atomic_Dog]

Curious - when did you get the vehicle (wonder if its a problem with earlier vehicles/resolved with more recent ones) and where are you (mountains or lower elevations, wondering if it's a problem with thin air like what occurred at the 2019 Santa Fe launch in Utah)

Got the car 12/33/18. 2390 ft elevation on a 70 degree afternoon.

If you floor the gas pedal you get the lag....try 3/4 depression and it does help take off

I will try this. I wonder if this is related to Packard8's comment about TC kicking in because I have experience this phenonema on the ram on rare occasion (the car leaps forward but then seems to dog out for 1/2 second then get angry again) -I assumed TC was stepping in with all the power to the wheels.

It could also be traction control in the ECM. I have a Ram/Cummins pickup and the ECM "detunes" the engine on takeoff, causing the "dead pedal" feel. They do it to save the transmission and keeping the 800 ft lbs of torque from tearing the driveline apart.

See above. You might be on to something.

I think Packard8 is on the money with this one. I find my I30 CRDI does the same thing and changed my driving style in this type of situation. I found out like you when I turned across oncoming traffic and thought OMG this is going to end up bad. All was Ok. Try slowly pushing the pedal down instead of mashing it and you will be pleasantly surprised.

So I think Xsolara and packard are on a similar wavelength. I might do some testing when the wife isn't around to see me beat on her baby.

If running regular, try premium fuel. You might just have too much knock sensor interaction. All that anti-LSPI programming is working against you. If already running premium, uncork the intake/exhaust to free up that turbo.

I read some threads about knock sensor/knock issues but thought this was solved with the 19. It's asking a lot to run on regular gas which varies in quality for sure (every time I filled up with Vallero gas I would get a check engine and cylinder misfire code on my ram with 5.7). I suppose I could fill up with super and conduct some full throttle starts. And never use Vallero gas because I don't exaggerate that every time I used it the ECU/ECM would be unhappy.

Thanks for confirming my feeling that this was normal(ish). Love the car. I think it should accelerate faster with 240 HP, but that's what happens when you drive V8's for 30 years -nothing smaller feels right. Nice to hear from people that have owned models with the same 2.0 in the past

 

[Packard8]

I think it should accelerate faster with 240 HP, but that's what happens when you drive V8's for 30 years -nothing smaller feels right. Nice to hear from people that have owned models with the same 2.0 in the past

Exactly.... Years ago I owned a 1996 Impala SS. Big 4 door sedan powered by the LT1 5.7 V8, 265HP. That car felt much much quicker than the Sonata Sport 2.0T. The Chevy was much larger & heavier with only 20 more HP, but I'm quite sure it would have spanked the Sonata in a drag race. Hard to go from a V8 to a small 4 cyl, even with a turbo.

 

[charlescrown]

Torque not horsepower makes a car get up and go.

 

[Packard8]

Torque not horsepower makes a car get up and go.

True, the LT1 is #320, the 2.0T #260 though the Chevy is a larger, heavier car.

I expected better acceleration from the Sonata, given the engine specs and the car's weight. I understand that the current 2.0T is derated from the earlier version (274 HP). I suppose they did that for durability.

 

[Circuitsmith]

Torque not horsepower makes a car get up and go.

And the shape of the torque curve is important.

The peak number doesn't mean much for driveability.