Stock AU series 3 forte. Beautiful car in most respects, and Ive only realy 1 drama. Horsepower and torque, it seems to lack both. Now, I would like to know if a j3 chip (from TI's) would improve perfomance? I dont realy want to get into mechanics or replace any parts (unless I absolutely HAVE to ofcourse). Is the j3 effective, and would it be worth my money and time? Any feedback from anyone who has any idea or knowledge on this subject would be very much appriciated. Thanx for your time......

factory lpg is not really a good performer to start with...

how gutless is gutless???
the lpg convertor might be due for a rebuild?

what shall I do then do ya rekon....?

Series III , that would be dedicated Factory gas from memory. They were supposed to make almost the same power as petrol. I would suggest getting the system looked at as it would be capable of quite good results both power and economy wise.