Brake boosting with turbo cars in GT5

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E46fanatic937

42
AwallE46ttsr20
I was wondering if brake boosting (holding the brake while gas to build up boost at like 40mph in 3rd) works on gran turismo 5 like it does in reality ive been away from my PS for bout a week haven't had a chance to try it
 
PD should really look into doing lag for more turbo cars it also seems that my B Day gift Ferrari F40 ha wink has plenty of lag then when the two IHI turbos kick in see ya.... well most of the time see ya lol
 
Yes, my F40 has about 600hp and it has massive lag from launch. Tha lancia rally car you win also has horrendus lag, and thats even on slippery gravel.

As far as doing what your talking about I think it kills the throttle if you try to do both at once. Then again I've only played with TC at the default 5 setting and that probably will effect the likelyhood of pulling something like that off.
 
By "lag" are you guys talking about loss of power in the low end or actual turbo lag, which is waiting for the turbo to spool after being off-throttle? I've owned a lot of diesel turbos and, although the reason might be that all my experience is with diesel passenger cars, I've not noticed any turbo lag with any of the cars I've driven in GT5. The power seems to be there instantly, without the huge delay between throttle and power that I've always had IRL.

Can anyone say they've noticed a spool-lag in GT5?
 
Some cars do have lag, but all too many of them are instantanious full boost, in the case of cars with lag though it probably will start spooling (albeit slowly) if you get the gas on before coming off the brakes (I assume your trying to exit corners quicker?)
 
I think most people don't notice turbo lag becasue if you drive a car properly you don't really experience it. Lag is much more prominent in lower RPM ... which you never see if you launch at redline and never fall below ~5000 RPM (example) when racing.

Sure, there is some spool time when getting back on the throttle out of a corner, but in real cars it's not as noticeable as many people think. In most cars it's still only noticeable if the revs fall too low (happens to me at autocross). In a real car you simply learn to compensate by getting on the throttle sooner to account for the delay in power delivery. Or, as I guess the OP is asking ... left foot brake in tighter corners to get the power back sooner.

If you want to test, go practice and try to roll in to the throttle in say 3rd gear at 2500 RPM with an upgraded turbo. Then, do the same with some pressure on the brake and see if it spools. Not difficult.

I haven't tested it myself, but the TQ curves correctly represent turbo cars and they have included an actual boost/vacuum gauge ... so I'm going to assume correctly modeling boost would be part of all this.
 
I have to disagree, in my 1.9 TDI 130, even at high RPM if I've been off throttle there is always a spool delay of I'd say at least 0.5s. You get this all the time in racing when coming off the brakes.
 
I edited my post to be a little clearer ... sorry. you learn to compensate for the spool time when racing by applying throttle a little earlier.
 
Hey thanks guys for all of your input i will try the HPA R32 with upgraded turbos maybe mid range to see if i can brake boost . For Falango, the almighty god of english get a life bro Im not writing a paper here. I finished english classes freshman year of college and I am done. Im an information technology major i could really care less so go jump off a cliff. :dunce:
 
asdfg11
If I remember right the Golf HPA thing takes a lifetiem to spool.
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Yep, i got stuck on the slight incline into the first tunnel on trial mountain. It wouldn't get up the "hill" from a standstill. Had to hold the brakes and build the revs to pull off.
 
Mopatop
By "lag" are you guys talking about loss of power in the low end or actual turbo lag, which is waiting for the turbo to spool after being off-throttle? I've owned a lot of diesel turbos and, although the reason might be that all my experience is with diesel passenger cars, I've not noticed any turbo lag with any of the cars I've driven in GT5. The power seems to be there instantly, without the huge delay between throttle and power that I've always had IRL.

Can anyone say they've noticed a spool-lag in GT5?
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Lag in a diesel doesn't feel the same as lag in a gasoline engine. The diesel's lack of a throttle butterfly and higher boost pressures make the experience of a diesel with a turbo different from a gasoline engine with a turbo.

That said, the turbos in GT5 do tend to have very little inertia. There is some attempt to model turbo lag, but it comes across more like an engine "coming on cam" (that is, as long as the engine's above XXXX RPM, you have power, but below that it doesn't).

Then again, turbo lag is most pronounced when you put your foot down while cruising at, say, 60 mph in top gear; the engine is "soft" for a little bit while the turbo spools. In GT5 you're always downshifting and keeping in the sweet part of the rev range, which would mask some of the effects of lag.

This question makes me want to do a 60-80 pull in 5th or 6th gear now to see if lag is modeled though.
 
If you want to see what turbo lag is like in GT, get in Gt4 and drive the 350Z Option tuning car. About 700hp (could be wrong) and almost doesnt accelerate if your in the wrong gear / revs....... Only had the game 3 days so havent seen anything with big BHP yet so cant say with Gt5. Will try the OP's suggestion thoigh when i get a chance!
 
Since its hard for me to find a clean race online that isnt with the fastest cars in the game I do a lot of split screen racing with my gear head friend. We do a lot of Motor Trend type of match ups on Circuit De La Sarthe, Nurburgring, Special Stage route 7 etc. I just thought it would be cool to take off on him with brake boosting technique in a turbo vehicle when we race from a roll. In reality I have raced an SRT-4 pushing 20 PSI on an upgraded turbo with SCT flash in my 330ci. He took off on me like a freakin rocket I heard the spooling before the rape. The guy said he was like at 400+ hp and 400+lbs tq and I dont doubt it, too bad the power gets to the road with the front wheels lol.
 
Mopatop
I have to disagree, in my 1.9 TDI 130, even at high RPM if I've been off throttle there is always a spool delay of I'd say at least 0.5s. You get this all the time in racing when coming off the brakes.
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I assume your talking about a MK4 Golf?

Mine didnt have lag so much as no pwer before 2000rpm, she doesnt have anything now, the power is instant and constant, but she has been fettled.....

You can hear the turbo when you drive, i slight hiss that gets louder when you put your foot down.
 
TMN Racing
I assume your talking about a MK4 Golf?

Mine didnt have lag so much as no pwer before 2000rpm, she doesnt have anything now, the power is instant and constant, but she has been fettled.....

You can hear the turbo when you drive, i slight hiss that gets louder when you put your foot down.
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Lol out of all the cars that carry that engine why would you assume a Golf? It's a 2002 A4 quattro. I love the sound of the turbo! I drive around with the window down listening to it all the time, although that's also because the climate control seems determined cook the death out of me right now. You're right about the power, it's non-existent below 2,000 but all turbodiesels are like that. What have you done to yours? I'm going to remap the A4 (supposedly to 180hp) when I get some spare cash but that's about it. I don't want the problems that mechanical changes can bring.
 
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I notice it with many of the cars that came stock with racing turbo's, but it doesnt seem to have the same lag effect on cars I've put racing turbo's in.
 
E46fanatic937
For Falango, the almighty god of english get a life bro Im not writing a paper here. I finished english classes freshman year of college and I am done. Im an information technology major i could really care less so go jump off a cliff. :dunce:
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Cute. Let's all make up our own funny incoherent languages to make communication on an international forum (where even non-native speakers try hard to write proper English) extra difficult.

Please take your own advice.
 
You guys are going to get this thread locked, which is a shame because I'm hoping someone tries some tests out. Anyone got any results?
 
well the one car that i'm for sure has turbo lag is the f40, and when i'm driving it i can hold the brake build up the boost and SEE YAAA!!!!
 

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