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?

 

stock boost gauges suck. what are your mods?

 

cat back...

i'm just worried that the mizture is f-ed up if the ecu thinks i'm boosting low

 

No other modifications? Still have cats?

 

yes to cats

PS exhaust wasn't done by me

 

bump me! :-)

 

once you start going over stock boost it messes up your stock boost gauge readings.

 

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.

 

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?

 

bump ity... dumpty

 

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.

 

u might hav fcd wired at the ecu u might want to check there

 

i thought the s5s were supposed to run 8.6 stock?