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Old 11-25-03, 02:47 PM
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haiO

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What does this mean?
What does it mean if my aftermarket boost gauge reads 9psi and my stock gauge reads like half way up only (200mmHg)?

Is it baaaad?
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Old 11-25-03, 02:55 PM
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stock boost gauges suck. what are your mods?
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Old 11-25-03, 03:01 PM
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cat back...

i'm just worried that the mizture is f-ed up if the ecu thinks i'm boosting low
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Old 11-25-03, 03:54 PM
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No other modifications? Still have cats?
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Old 11-25-03, 03:56 PM
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yes to cats

PS exhaust wasn't done by me
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Old 11-25-03, 05:28 PM
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bump me! :-)
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Old 11-25-03, 07:48 PM
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once you start going over stock boost it messes up your stock boost gauge readings.
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Old 11-25-03, 08:55 PM
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If you have the factory cats and just a cat back exhaust, it's hard to believe you'd be pulling 9PSI. If there has been mods to the exhaust and you have a FCD, it's possible that there is 9PSI and the factory gauge reads low bevause of the FCD.
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Old 11-25-03, 10:29 PM
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i'm pretty sure i don't have an fcd... i don't have anything jacked in near the pressure sensor... is there anywhere else it could be?
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Old 11-26-03, 10:35 AM
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bump ity... dumpty
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Old 11-26-03, 11:56 AM
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Well you have a S5 so you run 7.5psi stock. A catback will do something and 1.5psi isn't much. And what brand of aftermarket gauge do you have? Could also be inaccurate.
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Old 11-26-03, 01:57 PM
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u might hav fcd wired at the ecu u might want to check there
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Old 11-26-03, 06:08 PM
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i thought the s5s were supposed to run 8.6 stock?
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