Tuning Help

[Jason1]

Hi all,

Good looking and informative site here, glad to be a member and hello from the UK.

Could anyone help me with a problem I am getting with my 1989 moddified 7M-GTE

Firstly here is the list of mods on the car.

KOSIE 18X9 5 SPOKE ALLOYS
TOYO 18X35X265 TYRES
BLITZ EXHAUST SYSTEM
DOWNPIPE
COBRA SPORT TURBO ELBOW
DRILLED VENTED FRONT DISCS
BF GOODRIDGE BRAKE LINES
HIGH PRESSURE FUEL PUMP
FUEL PRESSURE REGULATOR
ADJUSATBLE CAM SPROCKET
LIGHTWEIGHT CRANK PULLEY WHEEL
K&N AIR FILTER
LEXUS AIR FLOW METER
UPRATED TURBO 15PSI
SPERACO INTERCOOLER
BLITZ DUAL BOOST CONTROLLER
APEXI SAFC CONTROLLER
550 INJECTORS
RED TUBING ENGINE DRESS KIT
BOV UPRATED
POLY BUSHES
CLASSIS FUEL PRESSURE GAGUE
SPRINGS LOWERED UPRATED
OVERBORE 020 JE PISTONS - RINGS
METAL HEAD GASKET
ARP HEAD/ROD BOLTS
UPRATED AUTOMATIC TRANSMISSION

Now for the question

The safc fitted to the car has not been mapped and so the car is running very roughly and very rich at the top end so bad I can smell it in the car.
Could anyone provide me with the base settings for this?
The low settings are all at 0 although the high settings have been done I am not sure if they are right.
Also the boost varies from day to day no matter how I set the blitz sbc.
I have it at 15 gain and 35, 40, 45, and 50 volume hoping to get a steady 1.2 bar at the 50 setting.However one day it will sit there no problem the next day it will overboost the most I have seen is 1.37bar and still going, anyone know why this is?
Any help would be greatly appreciated,
Thanks all