Bit of a noob question on Power FCs

[Burto]

Ok,

I am running Power FC plus boost controller on my N1 GTR which has N1 turbos and the usual mods. Now after an initial tune with a change to the timing etc the car was coming on boost at around 2500rpm and at 4000rpm was making around 0.9bar (from the peak readings of the Hand Controller). I was obviously very happy with this respons.

Anyway a couple of weeks late, i'm now finding that it still comes on at the low rpm but is only about 0.6-0.7 bar at 4000 and doesn't reach 1 bar till round 6000rpm. This is probably cause ive dicked round with the boost control settings which is where the question comes in.

These are the numbers that are dialed in to the power fc in the first and second last columns:

0.8bar 38 (approx)

0.9bar 42 (approx)

1.0bar XX

1.2bar YY

XX and YY are the numbers i was told to alter to change the boost settings. What are the numbers actually representative of? Not too concerned at the moment as i'm doing a few more minor mods then get it tuned to 1.4bar and this time i'll ask them to go over it in a bit more detail.

If this has been covered before then please point me in the right direction

Cheers

Burto