Turbo Lag?

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SaintLuke

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This is a question for the people who thinks the tyre and physics model make the game rather than say if we have 3d weeds in it...

Does GT5 model turbo lag? By This i dont mean does it have the power curve of a car that is turbo charged which is the way GT4 modeled lag. But say if you are in the rev range that the car makes good power and you nail the throttle. Do you get full boost straight away, or is it more gradual and does it vary between cars. The F40 is 20 years old and has effectively 2 fossil wood turbos.

The other question i have since the closest i've come to seeing or playing the game is watching youtube videos. Can you remove the digital speedo and throttle position/tacho that has made its way from GT4? I dont really see its useful since there is a cockpit view.

Cheers People,
Luke
 
SaintLuke
This is a question for the people who thinks the tyre and physics model make the game rather than say if we have 3d weeds in it...

Does GT5 model turbo lag? By This i dont mean does it have the power curve of a car that is turbo charged which is the way GT4 modeled lag. But say if you are in the rev range that the car makes good power and you nail the throttle. Do you get full boost straight away, or is it more gradual and does it vary between cars. The F40 is 20 years old and has effectively 2 fossil wood turbos.


Cheers People,
Luke
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GT5P does model turbo lag, and the differences between turbo cars is quite unique.

You say the F40 has 20 year old turbos, I geuss that explains why it probably has the worst turbo lag in the game.

Another car I was driving, I think it was the Blitz tuned car, had odd turbo lag. This is the first time I noticed in a GT game the turbo boost starting to drop off after a certain RPM. Usually the guage would stay maxed out but in the case of this car it starts to drop off.
 
The boost dropping off in real life only happens from an undersized turbo.

Ok so just to confirm something. At 1500 or 2000rpm with the blitz skyline, if you hit full throttle, i understand the power will be low but does the guage show full boost? This is what happens in GT4 and hense the lack of turbo modeling.

There are a 2 main things that goes into the way a turbocharged car makes its power. The first is the boost threshold. This is where the turbo can and cannot make boost, regardless of time and throttle position. This is modeled in GT4 albeit poorly by having a different power curve but the guage showed full boost at 1000rpm if so desired. The other is lag. This is where the turbo can make full boost and is measured whilst in this rev range by timing how long it takes from when you mash the throttle to when it gets full boost.

The reason i harp on about this is because it would be a major downer if they hadnt addressed this problem in GT5 thats all
 
Earth
This is the first time I noticed in a GT game the turbo boost starting to drop off after a certain RPM. Usually the gauge would stay maxed out but in the case of this car it starts to drop off.
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Actually, GT has this kind of feature (boost pressure dropping) since GT2(?), especially with those highly boosted turbo cars. You can see the turbo pressure dropping in boost gauge when the it's in high rpm. An obvious example would be the R34 Skyline GT-R. :)
 
All of the GT series have no turbo lag. They may have replicated the power curve of a turbocharged or modified turbo car by making no low down power etc, but thats not lag. Im not wanting a debate as im not dissing the series, im just wanting to know something simple. Where say the F40 or blitz r34 makes good power, if you mash the throttle, do you get full boost straight away? If you do, there is no turbo lag, if it builds gradually and the power does also then yes its modeled and that would be sweet indeed.

Luke
 
SaintLuke
All of the GT series have no turbo lag. They may have replicated the power curve of a turbocharged or modified turbo car by making no low down power etc, but thats not lag. Im not wanting a debate as im not dissing the series, im just wanting to know something simple. Where say the F40 or blitz r34 makes good power, if you mash the throttle, do you get full boost straight away? If you do, there is no turbo lag, if it builds gradually and the power does also then yes its modeled and that would be sweet indeed.

Luke
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Justed tested the F40, and no, you the boost guage is not maxed unless you reach around 5,000 rpm, and then it begins to drop later on

1-5,000 rpm the boost guage reads around 50-70%

edit: its hard to get an accurate reading of the guage because it responds differently in different situations, but WOT does not max it out at at any RPM
 
actually cancel that... i was looking at videos of the f40 and although it may model boost threshold there is no lag modeled. bummer, doubt this would be changed in the full release either.
 
Earth
GT5P does model turbo lag, and the differences between turbo cars is quite unique.

You say the F40 has 20 year old turbos, I geuss that explains why it probably has the worst turbo lag in the game.

Another car I was driving, I think it was the Blitz tuned car, had odd turbo lag. This is the first time I noticed in a GT game the turbo boost starting to drop off after a certain RPM. Usually the guage would stay maxed out but in the case of this car it starts to drop off.
Click to expand...

Turbo lag is the time between putting the accelerator down and the rotor to start producing boost, large single turbo cars suffer most and there are various methods to overcome it such as anti-lag sytems that keep the rotor spinning off boost and twin smaller turbines that spin up quicker.
 
Yes i understand that but that does not mean it models turbo lag. Watching the videos of the F40 the level of boost replicates the throttle position rather than boost levels. Eg. It gains boost while blipping the throttle changing down gears. Or the boost guage hits full boost as fast as you can mash the throttle down. It seems to me that it only replicates the power curve of a turbocharged car, not the lag.
 
Yes, turbo lag is not modelled much if any better than GT4 sadly. :(
 
It seems to have turbo lag, but the boost gauge always shows full boost! I have a GTI 1.8t with a boost gauge in it, and the power curve is completely wrong in GT5:P. Full boost should come in at about 3000rpm and then drop off from there. Instead full boost comes in whenever you're using full throttle and stays full until the redline. In real life you can HEAR and FEEL the turbo kick in, but in the game, they just gave the car no power in lower RPM's.
 
Bring back the good ole days of GT1. Hop into a fully tuedd and race modifed '91 Skyline GTR - now that was turbo lag! :sly:
 
Rocket Punch
Thats not the main reason.
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Its one of the main reasons. Turbocharged technology has come a long way in the past 18 years since the f40 has come out. Things like turbo housing sizes, turbine trim, A/R and a whole host of other things factor in the boost threshold and lag of a turbo. Not to mention the number of turbos and the capacity of the engine. But this is what makes a turbocharged car fun to drive, and something which isnt modeled in any of the GT series so far and is dissapointing seeing as even LFS S1 and the original Forza had it... hopefully that will change with the full release :).
 
SaintLuke
Its one of the main reasons. Turbocharged technology has come a long way in the past 18 years since the f40 has come out. Things like turbo housing sizes, turbine trim, A/R and a whole host of other things factor in the boost threshold and lag of a turbo. Not to mention the number of turbos and the capacity of the engine. But this is what makes a turbocharged car fun to drive, and something which isnt modeled in any of the GT series so far and is dissapointing seeing as even LFS S1 and the original Forza had it... hopefully that will change with the full release :).
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The MAIN reason had more to do with the turbo sizing and its twin layout (non sequential). F40 is designed that way to boost high end power.

You can built a car today that is designed to boost high end power with that kind of configuration and you will still get massive turbo lag.
 
I've done a test.

If you go through the whole 2nd gear (high turbo pressure) in an F40 it takes 1,8 seconds to go from 6k to 7k
If you start of on 6k in 2nd gear (low turbo pressure) in an F40 it takes 1,8 seconds to go from 6k to 7k

sorry but it seems the turbo lag is a myth
 

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