Where's your boost level?
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Where's your boost level?
I have been going a little nuts trying to get a my head around boost, psi and bar levels. Would love some input on what everyone is getting:
I assume if would be most helpful to list your year and we might as well list max boost levels in sport mode.
Max Stock Boost
Max Boost w ECU tune (please list tune if not in your signature)
Max Boost w Whatever ya got (all mods and upgrades)
I made the mistake of not paying attention to what I was getting before my mods but I will take a reading tomorrow if it's not raining and post.
I assume if would be most helpful to list your year and we might as well list max boost levels in sport mode.
Max Stock Boost
Max Boost w ECU tune (please list tune if not in your signature)
Max Boost w Whatever ya got (all mods and upgrades)
I made the mistake of not paying attention to what I was getting before my mods but I will take a reading tomorrow if it's not raining and post.
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The boost meter on the dash can be programmed for standard (PSI) and metric (BAR).
It is, however, a fairly inaccurate measuring device. Even the sensor itself isn't terribly accurate, and the sliding bar meter on the dash is more of a gimmick than a tuning device.
- bob
It is, however, a fairly inaccurate measuring device. Even the sensor itself isn't terribly accurate, and the sliding bar meter on the dash is more of a gimmick than a tuning device.
- bob
Last edited by bbywu; May 18, 2010 at 09:14 PM.
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Didn't think the bar option meant anything but are you saying the "psi" number is also inaccurate?
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Most tuners plot a datalog of boost during the development of ECU management for a specific configuration. At WOT, a stock 997TT will read 17 psi on sport mode throughout the RPM range. If you ask a tuner for a plot, you will find there is actually fluctuation throughout the RPM band, which is not reflected by the dash board gauge.
Your tuner will be able to tell you what the maximum PSI programmed for a specific tune should be. A stock 997TT should be producing around 1Bar at WOT, and 1.2Bar in sport mode WOT.
Last edited by bbywu; May 18, 2010 at 09:42 PM.
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Thanks!
The dash board gauge is not very accurate.
Most tuners plot a datalog of boost during the development of ECU management for a specific configuration. At WOT, a stock 997TT will read 17 psi on sport mode throughout the RPM range. If you ask a tuner for a plot, you will find there is actually fluctuation throughout the RPM band, which is not reflected by the dash board gauge.
Your tuner will be able to tell you what the maximum PSI programmed for a specific tune should be. A stock 997TT should be producing around 1Bar at WOT, and 1.2Bar in sport mode WOT.
Most tuners plot a datalog of boost during the development of ECU management for a specific configuration. At WOT, a stock 997TT will read 17 psi on sport mode throughout the RPM range. If you ask a tuner for a plot, you will find there is actually fluctuation throughout the RPM band, which is not reflected by the dash board gauge.
Your tuner will be able to tell you what the maximum PSI programmed for a specific tune should be. A stock 997TT should be producing around 1Bar at WOT, and 1.2Bar in sport mode WOT.
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The boost meter is porgrammed to only read a maximum of 18 or 17 psi. Even if you were boosting higher than that, it will not reflect on the factory boost guage. If your car is tuned with an ECU and exhaust, you are boosting quite a bit more than that.
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I was wondering just that. Thanks. Would be interested to know where it really is. I remember on my 01 Gemballa the boost meter was actually accurate or so I was told. Stock 996s were boosting around .9 bar and mine used to show 1.4+.
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1 bar = 14.5 psi.
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