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Re: 1.2 bar boost pressure - proof picture
Quote:
vtrader said:
Sorry RC, for those of us that do not have turbos, is 1.2 bar boost good or bad?
P.S. Mighty cold there in Germany, just above freezing.
1.2 bar are almost the maximum possible boost pressure with the stock VTG chargers, maybe up to 1.3 bar (specs for the chargers allow a max. boost pressure of 1.25 bar as far as I remember). What most Tuners, especially the "cheap" ones do is pretty simple: they raise the boost pressure at almost all rev ranges close to the maximum boost pressure, some are even just deactivating the overboost time limit.
Regarding the weather over here: I'm pretty happy the temperature dropped because I have winter tires on my Turbo for almost two weeks now and the temperature was always to high for them (Nokian WR tires, not too good above 10*C).
Right now I'm pretty happy with the Nokian WR, they deliver a very good performance at temperatures below 5*C. Today I had the chance to do some fun stuff and they really stick to the pavement pretty well, despite some fog we had today, keeping a tiny invisible layer of humiditiy on the street.
Porsche did a very good job together with Nokian, the tires are a good choice for lower temperatures. Should even get better when temperatures drop further. Only downside: comfort is pretty bad with PASM sport setting, a pretty bumpy ride I must say (wasn't like that with the summer tires).
Re: 1.2 bar boost pressure - proof picture
Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
congrats RC! hehe i dont know if its because my car is manual... but the best that i saw was 0.9
but ill keep trying
Re: 1.2 bar boost pressure - proof picture
I have had a hard time seeing the max boost higher than 15psi. I found that the boost bar graph will display it more than the numerical display - I think it runs up too fast to display it in lower gears.
Also, I found that when I was trying before, I was starting at too high a rev range - the overboost is only from 2-4k rpm per Porsche. The best test is to try in higher gears like 5th or 6th when the engine will not rev so quickly but the opportunities to do so will be very rare (speeds too high).
Also, I found that when I was trying before, I was starting at too high a rev range - the overboost is only from 2-4k rpm per Porsche. The best test is to try in higher gears like 5th or 6th when the engine will not rev so quickly but the opportunities to do so will be very rare (speeds too high).
Re: 1.2 bar boost pressure - proof picture
Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
Sorry but picture is not a proof. Yes, we see that it is displayed but nothing more. Is it accurately measured??, rounding 1.15 -> 1.2, 1.14 -> 1.1, ....
AM
PS. I can write you here about 20 pages how numbers are incorrect. I have studied this field for about 3 years.
Re: 1.2 bar boost pressure - proof picture
(mumbasic) can you proof its not 1.2 or 1.19999 ? .. 
RC , i belive you 100% .. guys ! WHY NOT 1.2 BAR ? its not something amazing or hard to reach ... when porsche A.G telling you its 1.2 bar , you MUST belive that its 1.2 bar ... if you dont want to belive ... try to proof that its not actual 1.2 bar ..
(by the way ..im running on 1.6 bar
)
RC , i belive you 100% .. guys ! WHY NOT 1.2 BAR ? its not something amazing or hard to reach ... when porsche A.G telling you its 1.2 bar , you MUST belive that its 1.2 bar ... if you dont want to belive ... try to proof that its not actual 1.2 bar ..
(by the way ..im running on 1.6 bar
)
Re: 1.2 bar boost pressure - proof picture
Quote:
mumbasic said:
Sorry but picture is not a proof. Yes, we see that it is displayed but nothing more. Is it accurately measured??, rounding 1.15 -> 1.2, 1.14 -> 1.1, ....
AM
PS. I can write you here about 20 pages how numbers are incorrect. I have studied this field for about 3 years.
Adnan, we weren't talking about accuracy but about the fact that many 997 Turbo owners apparently never have seen figures higher than 0.9 bar on their display.
Due to the complex technology of the VTG chargers however and some replaced mechanical parts, the accuracy of the displayed figure is pretty high, the error margin shouldn't be higher than 0.01 bar at the max. boost pressure.
Personally, I don't care now if real the boost pressure is 1.19 or 1.21 bar, the point was only to show that figures above displayed 0.9 or even 1.0 bar are possible.
Re: 1.2 bar boost pressure - proof picture
Quote:
xandi911 said:Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
congrats RC! hehe i dont know if its because my car is manual... but the best that i saw was 0.9
but ill keep trying
I have a manual one, and like RC I've already reached 1.2 bar several time in my turbo.... Keep trying...
Re: 1.2 bar boost pressure - proof picture
Quote:
polo said:Quote:
xandi911 said:Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
congrats RC! hehe i dont know if its because my car is manual... but the best that i saw was 0.9
but ill keep trying
I have a manual one, and like RC I've already reached 1.2 bar several time in my turbo.... Keep trying...
Might have something to do with gas as well. How many octanes are you running, xandi?
Re: 1.2 bar boost pressure - proof picture
Quote:
fritz said:Quote:
turbo_S said:
in my openion ... disconnect your battery for 20 min , then reconnect it then try your car . i think you will reach 1.2 bar (this is the classic solution)
LOL. Classic Microsoft-style reboot.
Don't forget to close the windows when you do that.
Re: 1.2 bar boost pressure - proof picture
Quote:
Crash said:Quote:
polo said:Quote:
xandi911 said:Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
congrats RC! hehe i dont know if its because my car is manual... but the best that i saw was 0.9
but ill keep trying
I have a manual one, and like RC I've already reached 1.2 bar several time in my turbo.... Keep trying...
Might have something to do with gas as well. How many octanes are you running, xandi?
i use the best gas in brazil... PETROBRAS PODIUM(R) - 96 octanes the gas in your country how many octanes?
Re: 1.2 bar boost pressure - proof picture
Quote:
xandi911 said:Quote:
Crash said:Quote:
polo said:Quote:
xandi911 said:Quote:
RC said:
Finally had the time to take a picture.
For those who didn't believe me or for those who never saw it, here it is: 1.2 bar max. boost pressure with STOCK ENGINE. This is no Photoshop job, this is my car and I took the picture myself.
congrats RC! hehe i dont know if its because my car is manual... but the best that i saw was 0.9
but ill keep trying
I have a manual one, and like RC I've already reached 1.2 bar several time in my turbo.... Keep trying...
Might have something to do with gas as well. How many octanes are you running, xandi?
i use the best gas in brazil... PETROBRAS PODIUM(R) - 96 octanes the gas in your country how many octanes?
We have 100 ROZ octane gas, but I'm not sure whether Brazil uses our rating system or the North American one
. Porsche recommends 98 ROZ.
Re: 1.2 bar boost pressure - proof picture
You can't achieve 1.2 bar at higher rev figures.
Try this: put in the 4th gear at around 40 kph and DO NOT apply full throttle until the boost pressure is aprox. 0.6 to 0.8 bar. You should be able to see 1.2 bar at around 3000-3500 rpm. 1.1 bar is OK too. Try it and tell us about the results.
Btw: 1.2 bar is ONLY displayed if you have Sport Chrono and it is activated. No Sport Chrono? No 1.2 bar boost pressure.
Try this: put in the 4th gear at around 40 kph and DO NOT apply full throttle until the boost pressure is aprox. 0.6 to 0.8 bar. You should be able to see 1.2 bar at around 3000-3500 rpm. 1.1 bar is OK too. Try it and tell us about the results.
Btw: 1.2 bar is ONLY displayed if you have Sport Chrono and it is activated. No Sport Chrono? No 1.2 bar boost pressure.
Re: 1.2 bar boost pressure - proof picture
Quote:
mawyatt said:
Hi all,
I haven's seen the boost in anything but PSI. Do the US cars not have the BAR? How can one activate BAR if available?
TIA,
Mike
US cars have both, you will have to reprogram the computer using the left lower lever behind the steering wheel. you can choose between metric or non metric values for boost and other data as well.
it is in the manual.
Re: 1.2 bar boost pressure - proof picture
Quote:
mawyatt said:
Hi all,
I haven's seen the boost in anything but PSI. Do the US cars not have the BAR? How can one activate BAR if available?
TIA,
Mike
And in case you are wondering, here are the conversions:
1 PSI (pounds/square inch) = 0.068947573 BAR, and
1 BAR = 14.503773801 PSI, so
1.2 BAR = 17.404528561
I find it more efficient to go by boost pressure in BAR, but it's fun to read the display in BAR or PSI.
Al
Jan 1, 2008 11:19:54 PM
- Alex_997TT
- Rennteam Master
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- Loc: Reading , United Kingdom
- Posts: 3320, Gallery
- Registered on: Nov 20, 2005
- Reply to: atomic80
Re: 1.2 bar boost pressure - proof picture
Only just over the 1000 mile mark, and the weather here is not great since I took delivery so still waiting to use the Sport button in combination with full throttle.
Anyway, the max boost I have achieved thus far in non-Sport is 0.8bar.
Shouldn't I be able to get 1.0bar in normal mode?!
Anyway, the max boost I have achieved thus far in non-Sport is 0.8bar.
Shouldn't I be able to get 1.0bar in normal mode?!
Jan 2, 2008 12:53:56 AM
-
AAHTT
- Senior
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- Loc: san diego , United States
- Posts: 654, Gallery
- Registered on: Jan 21, 2006
- Reply to: Alex_997TT
Re: 1.2 bar boost pressure - proof picture
Quote:
Alex_ said:
Only just over the 1000 mile mark, and the weather here is not great since I took delivery so still waiting to use the Sport button in combination with full throttle.
Anyway, the max boost I have achieved thus far in non-Sport is 0.8bar.
Shouldn't I be able to get 1.0bar in normal mode?!
Not necessarily, 0.8-0.9 bars is normal for non-sport mode.
btw, how could you not press that button for a 1000 miles?
Jan 2, 2008 9:42:13 AM
- Alex_997TT
- Rennteam Master
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- Loc: Reading , United Kingdom
- Posts: 3320, Gallery
- Registered on: Nov 20, 2005
- Reply to: AAHTT
Re: 1.2 bar boost pressure - proof picture
Quote:
AAHTT said:Quote:
Alex_ said:
Only just over the 1000 mile mark, and the weather here is not great since I took delivery so still waiting to use the Sport button in combination with full throttle.
Anyway, the max boost I have achieved thus far in non-Sport is 0.8bar.
Shouldn't I be able to get 1.0bar in normal mode?!
Not necessarily, 0.8-0.9 bars is normal for non-sport mode.
btw, how could you not press that button for a 1000 miles?
Thanks,
I have had Sport on a few times but given public wet/icy/crappy/busy roads I have been on there has not been a safe time to push my right foot into the floor
Also, trying to run her in carefully, so am being patient
Def not seen 0.9 in Normal mode, 0.7 mostly which sometimes peaks briefly at 0.8 bar. I had a quick scan through the manual last night and the only thing I saw on boost pressures was some text that stated over-boost gave you 0.2 bar more, and a pic with over-boost showing 1.2 bar. Hence my postulation that Normal mode should be able to reach 1.0 bar.
And yes, I am using full 98 Octane fuel before someone asks.
Jan 18, 2008 1:31:57 PM
- turbosteff
- Co-Pilot
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- Loc: Hessen,Germany , Germany
- Posts: 153, Gallery
- Registered on: Dec 2, 2006
- Reply to: Alex_997TT
Re: 1.2 bar boost pressure - proof picture
Quote:I have the same situation: 98 Octane, max 0.8 in normal and max. 1.0 in Sport.
Alex_ said:Quote:
AAHTT said:Quote:
Alex_ said:
Only just over the 1000 mile mark, and the weather here is not great since I took delivery so still waiting to use the Sport button in combination with full throttle.
Anyway, the max boost I have achieved thus far in non-Sport is 0.8bar.
Shouldn't I be able to get 1.0bar in normal mode?!
Not necessarily, 0.8-0.9 bars is normal for non-sport mode.
btw, how could you not press that button for a 1000 miles?
Thanks,
I have had Sport on a few times but given public wet/icy/crappy/busy roads I have been on there has not been a safe time to push my right foot into the floor
Also, trying to run her in carefully, so am being patient
Def not seen 0.9 in Normal mode, 0.7 mostly which sometimes peaks briefly at 0.8 bar. I had a quick scan through the manual last night and the only thing I saw on boost pressures was some text that stated over-boost gave you 0.2 bar more, and a pic with over-boost showing 1.2 bar. Hence my postulation that Normal mode should be able to reach 1.0 bar.
And yes, I am using full 98 Octane fuel before someone asks.
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