What happens with crome if u overboost?
08-24-2006, 08:32 PM
#12
3.0 BAR
Join Date: Apr 2004
Posts: 9,800
Re: What happens with crome if u overboost?
Originally Posted by xenocron
Most map sensors, OBD0 or OBD1 never seem to read anything higher than 9.6 psi that I have experienced...
Personally I like to set a boost cut for safety, BUT with a stock map sensor...even if you set the boost cut to 10.5 psi and if the map sensor cant read that high...it will never cut.
So, thats why if you are on the threshold or boosting higher than 10psi...I suggest using and getting tuned with a large map sensor.
Personally I like to set a boost cut for safety, BUT with a stock map sensor...even if you set the boost cut to 10.5 psi and if the map sensor cant read that high...it will never cut.
So, thats why if you are on the threshold or boosting higher than 10psi...I suggest using and getting tuned with a large map sensor.
ps - the new lm1 works pimptastically.
08-24-2006, 08:50 PM
#13
1.0 BAR
Join Date: Jan 2005
Posts: 425
Re: What happens with crome if u overboost?
Originally Posted by ****
ive read usually 10.7psi max on all cars...altitude i guess...
ps - the new lm1 works pimptastically.
ps - the new lm1 works pimptastically.
08-24-2006, 11:47 PM
#14
3.0 BAR
Join Date: Jul 2003
Posts: 6,449
Re: What happens with crome if u overboost?
Originally Posted by ****
ive read usually 10.7psi max on all cars...altitude i guess...
ps - the new lm1 works pimptastically.
ps - the new lm1 works pimptastically.
i know most of these cars i am speaking about are in the 12-13 psi range, but only reading sub 10psi (via voltage) on a stock map
08-25-2006, 01:15 AM
#15
0.0 BAR
Join Date: May 2005
Posts: 0
Re: What happens with crome if u overboost?
Originally Posted by xenocron
weird...although, it doesnt have anything to do with altitude...
i know most of these cars i am speaking about are in the 12-13 psi range, but only reading sub 10psi (via voltage) on a stock map
i know most of these cars i am speaking about are in the 12-13 psi range, but only reading sub 10psi (via voltage) on a stock map
It does have to do with altitude. It's absolute.
I get around 11.2 down here near sea level.
08-25-2006, 06:30 PM
#17
3.0 BAR
Join Date: Jul 2003
Posts: 6,449
Re: What happens with crome if u overboost?
it has NOTHING to do with absolute or altitude!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
think about it for a minute and then apologize...
or try to prove me wrong, with ACTUAL facts please
It does have to do with altitude. It's absolute.
I get around 11.2 down here near sea level.
think about it for a minute and then apologize...
or try to prove me wrong, with ACTUAL facts please
Originally Posted by MADMAX
It does have to do with altitude. It's absolute.
I get around 11.2 down here near sea level.
08-25-2006, 06:40 PM
#18
0.0 BAR
Join Date: May 2005
Posts: 0
Re: What happens with crome if u overboost?
Originally Posted by xenocron
it has NOTHING to do with absolute or altitude!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
think about it for a minute and then apologize...
or try to prove me wrong, with ACTUAL facts please
think about it for a minute and then apologize...
or try to prove me wrong, with ACTUAL facts please
Absolute pressure at 5000 ft elevation = 0.842 bar; 0.842 bar + .5 bar of boost = 1.342 bar = 5.03 psi
Absolute pressure at sea level = 1.000 bar; 1.000 + .5 bar of boost = 1.5 bar = 7.35 psi
08-25-2006, 06:59 PM
#20
Guest
Posts: n/a
Re: What happens with crome if u overboost?
Your all bass acwards Max. Absolute pressure is you know absolute pressure. High altitude has lower pressure then at sea level. But that doesn't even going to matter because the map can only read a set amount. It doesn't care if your motor is in vacuum or in boost.
it doesn't set their and think oh okay I'm at 5000 feet so I need to little longer before I stop reading or the other way around.
The inside of the motor is a little contained environment all it's own. All the map cares about is what the pressure inside the engine is. If all the stock map can read is ten psi thats all it's going to read. the map doesn't care where on earth it is If the car is in the hold of a C5 at 30.000 feet the map can only read X amount of pressure.
But granted if you are in Denver or somewhere at high altitude the air is thinner so it will take your car a fraction longer to build boost maybe but all your map sensor is going to read is what it's designed to.
it doesn't set their and think oh okay I'm at 5000 feet so I need to little longer before I stop reading or the other way around.
The inside of the motor is a little contained environment all it's own. All the map cares about is what the pressure inside the engine is. If all the stock map can read is ten psi thats all it's going to read. the map doesn't care where on earth it is If the car is in the hold of a C5 at 30.000 feet the map can only read X amount of pressure.
But granted if you are in Denver or somewhere at high altitude the air is thinner so it will take your car a fraction longer to build boost maybe but all your map sensor is going to read is what it's designed to.
