Non-PP boost gauge... how inaccurate?

[ForYourOwnGood]

Sorry if this is a repeat thread, but I seriously could not find anything besides GT owners with superchargers talking about this.

I'm assuming that this electronic gauge is not super accurate, but how far off is it? I've been watching it for a while now and I have never seen more than 8-10 psi register on it even in extended 4th gear pulls. Short of getting a mechanical gauge in there somewhere I have no real way to verify it right now, so either the car is making no boost or the gauge is way off (I'm leaning towards low boost because the car feels like and has felt like a slug since day 1).

Sponsored

 

[apx632]

It's not that inaccurate at least compared to the reading I get on my Cobb AP. They read almost identical. The Air Fuel ratio however is inaccurate. I've noticed as big a difference as .7 between what my car gauge says and what the Accessport shows me and logs.

 

[ForYourOwnGood]

It's not that inaccurate at least compared to the reading I get on my Cobb AP. They read almost identical. The Air Fuel ratio however is inaccurate. I've noticed as big a difference as .7 between what my car gauge says and what the Accessport shows me and logs.

OK thanks, so I definitely have some sort of issue going on. I can't imagine what it would be though. Maybe I'll have to take it back to the dealer because the hesitation is back too.

 

[ForYourOwnGood]

So this is what I get, this is 4th gear from about 70 with the pedal to the floor. The temp outside was 31*F.

Does this look normal, or is it just the gauge being way off? The car feels like it makes about 150hp.

[ame]

Sponsored