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Need help with boost gauge and greddy profec b

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talontsiboy24

10+ Year Contributor
868
3
Mar 28, 2009
60457, Illinois
ok i have a greddy bar style boost gauge and was wondering if you guys can tell me how much psi is for each number? it goes up to 2.0... also does the temperature outside depend on when to turn the boost up or not? i have a greddy profec b boost controller and would like to know what do them little dots mean for the low and hi boost settings theres like a nob u turn?
 
Is it Bar or is it Kgf/cm2?? My Greddy is Kgf/cm2 which is a little less than bar....

1.0bar is 14.5psi.... 1.0 Kgf/cm2 is 14.22 psi

I don't see any mods in your mod list if you are on the stock t-25 i wouldn't go past 16psi which is 1.103 Bar or 1.125 Kgf/cm2... Cause past that they blow lots of hot air. The hotter it gets outside the less dense the air is also the higher the Altitude the more boost you can get away with cause of less dense air.

But as I stated 16 maybe 17psi in ANY weather on stock Fuel and Stock t-25 any more you will waste your time, maybe push into knock cause your intake charge will just keep heating up with the stock SMIC, the car will pull timing and it will just get slower the hotter the Intake charge gets.

You don't change Boost levels with weather unless you are getting knock from the charge being to hot or the air being to cold and dense causing your boost to increase on its own... I have seen a 3-4psi increase going from 80F to 30F outside.

As for the Profec B never had one someone will have to chime in on that!!!
 
Is it Bar or is it Kgf/cm2?? My Greddy is Kgf/cm2 which is a little less than bar....

1.0bar is 14.5psi.... 1.0 Kgf/cm2 is 14.22 psi

I don't see any mods in your mod list if you are on the stock t-25 i wouldn't go past 16psi which is 1.103 Bar or 1.125 Kgf/cm2... Cause past that they blow lots of hot air. The hotter it gets outside the less dense the air is also the higher the Altitude the more boost you can get away with cause of less dense air.

But as I stated 16 maybe 17psi in ANY weather on stock Fuel and Stock t-25 any more you will waste your time, maybe push into knock cause your intake charge will just keep heating up with the stock SMIC, the car will pull timing and it will just get slower the hotter the Intake charge gets.

You don't change Boost levels with weather unless you are getting knock from the charge being to hot or the air being to cold and dense causing your boost to increase on its own... I have seen a 3-4psi increase going from 80F to 30F outside.

As for the Profec B never had one someone will have to chime in on that!!!
Its a bar style I have a forced performance green turbo.
 
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