LB7: boost gauge questions

[02maxstang]

:baby:
I am curious to find out, but I have an 02 lb7 and I have the cheap amazon obd Bluetooth transmitter that's linked with my android phone. Does anyone know how accurate the "boost gauge" is compared to an aftermarket gauge plumbed into the piping. Also where in the system does the computer reads this boost feed.

Truck with a ppe "boost valve," ported horn, and S&B CAI
at idle reads 0+- boost/vac
at WOT it reads 19+-boost
-Does this seem to be accurate compared to other lb7 with similar "mods"-with a real gauge

 

[kellock]

boost

hi I have stock 03 lb7 with 35 psi. boost guage and ppe performance valve and I get bout 17 18 psi. full throttle flat highway pull other than that everything else ok had bad air leak found it under the air filter box thightened it now ok

 

[DAVe3283]

There is an upper limit to what the OBD adapters can read for boost, but with a stock turbo and boost valve, that number seems about right. The next best option is to add a mechanical gauge, but in your case, I think you can read the real value already.