can anyone help?
s2 rs starts some times and runs revs fine but if you let off the throttle it stalls it self and dies
then we have to turn it over 25-20 times and then starts its a bit smokey but it revs clean but just wont idel??

the only thing it has is a chip?

and it back fires too?

can anyone help as its my daliy car know so could do with the info as why its been a pain?
any help pls ian