Boost gauge reading high

[Kaelandenys]

G’day
Just put in an electronically controlled boost gauge into my yd25 d40, it works great but according to this gauge, I’m pumping out 30 psi. It hasn’t had a tune or any ecu work to my knowledge. I have it plumbed Into the drivers side pressure sensor on the intercooler. Any help would be greatly appreciated.

cheers

 

[Phunk]

you don't have a cheap OBD2 adapter to also double check via the ECU to see what boost its making?

The only time I know of a car making well over and above stock boost pressure with no mods is when it is wastegate issues related.

There could also be the fact that the gauge is dodgy

 

[Kaelandenys]

I’ve got one in the way to check just that. Just wanted to see if anyone else has run into a similar issue

 

[Old.Tony]

I've never used an aftermarket gauge. I've used some software that read the information incorrectly, but I now use Torque (Android) which just gets the info from the ECU.

 

[Marked]

Daughter's Nav has an aftermarket gauge, but it is plumbed into a newly tapped hole in a manifold and connected by its own vacuum hose to read the pressure via its own hardware rather than interpreting the car's own signal.

 

[Rumpig]

Atmospheric pressure is 14.7 {generally} so your probably running at 15.3.
ECUtalk does the same thing.

 

[Phunk]

Atmospheric pressure is 14.7 {generally} so your probably running at 15.3.
ECUtalk does the same thing.

This right here is a valid point, but being a mechanical gauge it should only be showing positive pressure once it's gone past Vacuum to Boost.