boost gauge fault?

[boostedgsx95]

Ok, I have a autometer cobalt boost gauge and a 60mm greddy gauge in my center console that has the "memory" and "warning" function. Anyway, I was "street tuning" my car today and my autometer gauge read 13-14psi, the greddy read pretty much the same, (its in bar so its hard to tell) and dsmlink read 10psi... which one is more accurate? I would think its the autometer one just bc it going straight to a vacuum line, but my buddy said he had a couple autometer's be off on him by 2-3psi.. So which one is more accurate?

 

[ramsack]

if both boost gauges show the same boost, and the dsmlink shows different, then i would trust the majority. what is the dsmlink using to sense boost?

 

[boostedgsx95]

im not sure where the dsmlink is getting the boost estimate, The car had dsmlink when i bought it. is there a way to find out easily?

 

[ramsack]

i would guess it's just being estimated like the stock boost gauge does. i assume if you mess with the maf compensation values it will throw the boost number off.

 

[boostedgsx95]

Ok, So more than likely the autometer gauge is going to be more accurate bc its going straight to vacuum line right?

 

[ramsack]

that and they are measuring actual boost and not a calculation. on a mechanical gauge as long as the needle sits somewhere in the box they put around zero, it will be accurate with vacuum or boost.

 

[olmytsi]

Boostest in dsmlink is just that, an estimate. It should be close to your actual boost between 5500 and 6500 ish where VE is 100%.

DO NOT rely on it however...same goes for the AF RATIO in dsmlink.

 

[boostedgsx95]

Ok thanks for the help!