ASLAMALAIKUM
i have many questions about nitrious oxide in my mind. i only saw them in pics of some modified cars like civics. i want to know that
1) what does they increase acceleration or top speed or both?
2)how much they cost?
3)they can be fitted in any engine or any specific?
4)from where they can be availble in lahore?
5)also tell me some about some shops which are experts in modifieng the cars