Well, i tried all resistors and diodes possibles MAP mods in 2.5bar sensor and i can say that any of these mods worked fine for me...Crazy boost! too much boost spikes and using boostvalve!
The best way to go is with 3 bar map sensor and boostvalve for to adjust boost. I set mine to 1.3 and i haven't spikes above 1.4-1.5!!! A lot more stable,reliable and funny...
I put a lower value resistor for EVRY and when the evry switch is on i have a IQ of 1.6-1.8...i have to switch on EVRY when engine is started for to avoid engine light...
This is the best cheap combination for me after a lot of tries:
-MAF mod + EVRY (IQ 1.X) + 3 bar map + boostvalve
I can't see a lot of smoke at any moment... will be the EGTs too highs with a IQ of 1.x?or 1.4-1.5 bar is sufficient for to cool EGTs in the 1.X IQ range?
I will order my Race520 nozzles tomorrow, until i've got them, i will keep these cheap mods: too much faster than before, for sure!