When I got my car, it already had a Tomei ECU/poncam. I am using a greddy profec B and Defi BF boost gauge. When the boost controller is turned off, it runs between .9bar and 1.1bar max boost depending which gear I am in.

What is the factory boost level in bar? I heard 1.3 bar was the safe limit on standard internals.

Another question I have is this: Between shifts, my boost can jump and peak up to 1.4 bar, just for a second, then remain at max boost level set. Is this normal or is it harmful. Should I turn down the gain level?

Last question: Sometimes 50% of the time when I start my car (either cold or warmed up) the boost will show at 0. When i drive, it will boost up, then settle at 0. This happens for about 1 minute, then goes to normal. -0.4 ~ -0.6 at idle. Don't think its the gauge. Anyone else have this happen?

To convert psi to bar (the metric unit of pressure), use this formula:
psi x 0.07 = bar
Example: 30 psi x 0.07 = 2.1 bar

To convert bar to psi, use this formula:
bar x 14.5 = psi
Example: 2 bar x 14.5 = 29 psi



THNX