what is ur car model and dear compressor take load according to engine cultus is 1000 cc work average with its compressor but if u try 1300 cc in cultus i dnt think it will work will put too much load on engine ............ cultus new models have improved compressor with low voltage required try to know abt that in market if u can replace new model compressor would be better but Cultus AC is always average all 1000 cc is same