3.3TT turbo lag

[Marc Collins]

I wonder if this is also true in other drive modes, such as Eco?

Drive modes do not change anything about the engine or the power it delivers. They only change the throttle response "curve." I don't know the exact numbers, of course, but ECO probably has a fully linear throttle meaning that if you press the throttle 5% or 45% or 85% you get 5%, 45% or 85% of the throttle/power. All sport modes do on almost every car in the world that has them is bend that curve so that more of the power is applied with less throttle input. So, you press 5%, but get 10% of the power, 45% and get 60%, but then by the time you get to 85% or 90%, you are actually getting less power because you already got it (used it up) with less pedal application. Some cars, like Toyota and others are famous for using this approach as a default even on cars with no modes. Those are the vehicles that you get in and immediately think, wow, this car is peppy! Then, some time when you actually need full power and press the pedal to the last 20% of it's range, you realize there is nothing there...

Huge turbos from the olden days that produce huge power gains are slow to spool-up and come in with a bang. You get almost nothing in boost and then suddenly wham, you are scooting forward. The Stinger is the complete opposite (as are most turbos today). It is designed so the boost is a smooth and seamless as possible--in fact, 99% of people wouldn't even know it was a turbo based on a blind-fold test. It just feels like a larger engine than it is. This is the pinnacle of good automotive engineering (for a road car).

 

[hej]

From a dead stop, you cannot expect the turbos to be already running, they will only kick in at a certain RPM. Any car with turbos will behave like that.
I think the complain is a mix of turbo lag and delay of the transmission logic to execute the order (maybe downshift to the proper gear).

I've driven the 3.0L turbo six that BMW makes, and my experience with those engines was that peak torque was effectively available at any time.

 

[Gdank]

Having now down 450miles In my car I can say there is virtually no turbo lag in sport mode.

 

[Wilzer]

Just became new proud owner of a new 2018 GT2 and the hesitation pulling out in traffic has my attention. Maybe it's I push the accelerator and back off as I am rolling and then push again when I need acceleration (but I get dying gasp). Downshifting seems to help but with turning the wheel, can't figure out what paddle to use for upshift Sport mode seems to help, but not always. I have fly by wire sure do wish the shifter would move left and right to up and downshift so I could steer with one hand and shift with the other, like I did with stick shift. ANY IDEAS WOULD BE APPRECIATED

 

[Marc Collins]

Just became new proud owner of a new 2018 GT2 and the hesitation pulling out in traffic has my attention. Maybe it's I push the accelerator and back off as I am rolling and then push again when I need acceleration (but I get dying gasp). Downshifting seems to help but with turning the wheel, can't figure out what paddle to use for upshift Sport mode seems to help, but not always. I have fly by wire sure do wish the shifter would move left and right to up and downshift so I could steer with one hand and shift with the other, like I did with stick shift. ANY IDEAS WOULD BE APPRECIATED

Turbos need non-jerky and consistent throttle application. If you press the gas smoothly and deliberately without backing off until you approach the speed you want to reach, things will work much better than jamming the throttle quickly (doesn't matter how hard) and then letting off then back on, etc. The turbo has no idea whether to spool-up (and stay spooled) or not when you do that. Turbos of old with major lag taught some us that

Stinger has a very slight turbo lag, but you can easily make it worse. If you work with the turbo and not against it, it has just about the least turbo lag of any car available. Sport mode just keeps the revs a bit higher where there is less chance you can muck with the turbo pressure...it's not any faster than Comfort or manual except at initial launch (due to the higher rpms).

 

[Wilzer]

Thanks Marc, Maybe Jamming isn't exactly what I was doing, just a small nudge, hopefully to get things going and then as I see way clear, then apply a little smooth pressure. Never had a problem with straight line acceleration, just turning into traffic, Yikes!

 

[NS_Stinger]

I agree with almost everyone else here that the Stinger has very little lag with full torque availablr at such a low rpm. What you're experiencing is probably more of a throttle lag, I bet a pedal box would solve this issue for you.

 

[CaliSting]

I don’t detect much turbo lag when in sport mode. Throttle lag I detect is more electric throttle body and throttle trimming when traction isn’t perfect.

 

[DarthVaderIX]

I came from driving a 2016 sti. Let's talk about turbo lag with that car. Drive one of those then drive the stinger again. These stingers have very little turbo lag compared to other cars.

StingerGTandMe is right, the stinger GT has almost zero lag compared to other turbocharged cars. Now, coming from Mitsubishi 1st gens and one Evoix with large frame turbos is my paradigm. Cars that wouldn’t even spool in 1st from a roll out. I guess it’s all relative. OP go find someone with a car with large frame turbines on it and then drive your stinger again. You’ll feel better!

 

[Dick Dastardly]

What you're experiencing is probably more of a throttle lag, I bet a pedal box would solve this issue for you.

Also play around with the different modes, I find sport mode acts as if you have a pedal box. Actually in traffic I prefer ECO mode as you have much less sensitivity when pulling into traffic, meaning you have to push the accelerator harder to get going so you overcome the on/off throttle input that I find that SPORT gives.
The other solution is move your seat half an inch further forward - amazing the difference it makes!

 

[Angel]

So, I finally drove a Stinger GT today. One thing that I decided to evaluate was the throttle response, given reviews I had seen and heard elsewhere citing turbo lag. I've got to say, the lag when flooring it from a dead stop was significant. Seems like it was about two full seconds, which makes me assume all these sub 5 second 0-60 times included brake torquing it. And "yes", I had it in the sportiest of sport modes.

It leaves me wondering, what sort of after market mods might improve this? Reviews of the G80 Sport and G90 with the same exact engine claim very little lag, which makes me think there might be some room for small improvements. What do you guys think?

Turbo lag on a stinger gt lol .... something is not right wether your assesment is way off or the something is wrong with the car .... virtually no lag on my car since I bought it .....you sure the auto hold was not on lol and was braking on the car and it turned off ???

 

[Angel]

To be honest, I have noticed very little turbo lag. Sure, there may be a tiny bit but unless you have an electric motor to pre-spin the turbos, you're going to get some. On that note, why even bother with turbos? Why not put superchargers that are driven off a belt from the motor? Yeah, yeah. More fuel efficient. Pffft!

What ??? WTF?? Electric motor to pre spin turbo ?? Wtf ..... put supercharger lol wtf again ... there is a reason why most to all supercsrs and high performance cars are turbo lol not because fuel effiency. , because of performance dude ..... generally only big v8 use supercharged and it’s because of room restriction to put turbos lol ... turbos just make more power and out perform a supercharger any day of the week .... wtf again .... my man my advice is go to google and do a little research ....

 

[MerlintheMad]

Fun, fun thread! (How many of these gems are hiding in the forum database? Hooray, thread necromancy!)

I've tried launch control (limited amount of times, but experience is increasing as time goes by), and auto hold "launches". Launch Control, done right, has no turbo lag. Auto hold "launches" also has no lag, if you are patient: that is counter intuitive lingo, I know, let me explain: You have your left foot planted on the dead pedal; your right foot is positioned strategically to give best control, and when you're ready you simply press down smoothly and swiftly, but not instantly. You'll know the difference by the reaction of the engine. If you press the go pedal too fast/hard, there is hesitation then you take off. If you press down just the right swiftness the engine meets your foot exactly and there is no lag at all. (But, as far as zero to sixty times go, which I have not done, I would guess that launch control beats using auto hold. One of these days I will get some timing figures.)

For now, I am still trying to do launches consistently without leaving my shifter in manual gate!? For some mysterious reason, I have this subliminal idea that I should be doing the shifting for myself: and when I get everything all set up and release the brake, I find that, once aaagain, I have moved the shifter to the left into manual gate. I've done this about half of the total launch controls that I have done. It is an interesting psychological phenomenon. And embarrassing: there goes this baby boomer in his speedy silver car way out there in front of the other one or two or even three front row cars, and then, right out there in front of everybody else, he suddenly "dies" as his nanny takes over the car and upshifts, or he suddenly realizes what he's doing, aaagain, and taps the brake and/or flips the paddles in confusion. (That is the description of my latest launch control forray.) I'll get it ...

 

[westcoastGT]

What ??? WTF?? Electric motor to pre spin turbo ?? Wtf ..... put supercharger lol wtf again ... there is a reason why most to all supercsrs and high performance cars are turbo lol not because fuel effiency. , because of performance dude ..... generally only big v8 use supercharged and it’s because of room restriction to put turbos lol ... turbos just make more power and out perform a supercharger any day of the week .... wtf again .... my man my advice is go to google and do a little research ....

Yo Angel , I think he was being sarcastic ..............( you know , just kidding )

 

[Angel]

Yo Angel , I think he was being sarcastic ..............( you know , just kidding )

Plot twist .... I was being sacarstic as well ....

 

[westcoastGT]

Bawaaaa , TFF !!

 

[NS_Stinger]

404 turbo lag not found

 

[eflyguy]

Funny but the whole point of LC is to have the RPM's already up past max torque and as a result, the turbos are spooled up.

Part of the justification for twin turbos is to allow lower mass and faster response, although it's also more practical on a V.

With that said - there is no appreciable lag on the Stinger as most of us already know, even without LC. You'd have to be manually forcing the engine to run close to idle then flooring it (without down shifting) to see evidence of any lag.

Folks who's owned cars that don't produce appreciable boost until 3k or so know what "turbo lag is"..

 

[CaliSting]

We have pretty small fast spooling choo choos. Baby snails. I’ve driven cars with turbo lag and this ain’t one of them.

 

[Angel]

We have pretty small fast spooling choo choos. Baby snails. I’ve driven cars with turbo lag and this ain’t one of them.

Lol hahahaha best description these little baby choo choos spool pretty fast I never had lag issues or noticed lag issues