[menthuslayer]

Hey,

Running an otherwise stock '16 ST with stratisfied 93OCT flash tune. Someone on the datalog forum was commenting my off throttle boost vaccuum of -12 was to low and could be cause for concern. It's pretty consistently -10-12 when when I'm off throttle. Is this cause for concern?

 

[brian60]

Hey,

Running an otherwise stock '16 ST with stratisfied 93OCT flash tune. Someone on the datalog forum was commenting my off throttle boost vaccuum of -12 was to low and could be cause for concern. It's pretty consistently -10-12 when when I'm off throttle. Is this cause for concern?

Mine does it too. Idle it sits -9 off the throttle moving it's -10 to -11 typically and the past few days I've seen my minimum value on the accessport read exactly -12.0 on the dot. Pretty normal I think.

 

[LMStone510]

Same here. Nothing to worry about IMHO.

 

[MiltonST3]

Hey,

Running an otherwise stock '16 ST with stratisfied 93OCT flash tune. Someone on the datalog forum was commenting my off throttle boost vaccuum of -12 was to low and could be cause for concern. It's pretty consistently -10-12 when when I'm off throttle. Is this cause for concern?

It seems normal but you would be much better off paying for a log revision and sending Alex and Aaron your datalog.

 

[rkpt_ma]

Keep in mind that the boost / vaccuum gauge on the AccessPort is reading psi for both sides of the gauge (pressure and vaccum). Traditionally vaccuum is measured in inches or mercury. If measured in in-hg the gauge would probably read somewhere around -20 at idle with max reading around -24 under throttle lift at speed.

In short your readings of -10 and -12, respectively, are spot on for -20 in-hg and -24 in-hg