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Running at .9 bar (13 psi) will probably require more fuel then your stock fuel pump can provide. Upgrade the fuel pump to a Walbro 255 lph along with an adjustable regulator would be a smart move. Adding an Apexi safc would also be a good addition; this way you can better manage the fuel system.
The stock 370 cc injectors may be close or at their limit when running at .9 bar. You might want to consider going with larger injectors if you're going with higher boost levels.
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