you need volume for the fuel,. an depending on where you put the nozzles,. an what you wnat it to do. lag elemnater,.for the coling,. an wet with the fuel on one side of the nozzle an nos,. at the same time. which gets pluged in after the ic,. (like a fogger, so ta speak). an also where you put it,. due to the turbo,. it will increase the sugested amount., of gain. (due to it being compressed air.) What sytem are you going to set it up with??? NX-express has a few difrent types that you can veiw at www.nitrousexpress.com they have a slection an some info,. to help you out. alwasy make sure,. your silinoids are clean, a good perg. (noid). a few (people) have turned to compucar which is a med grade type(like dentsits) use for pain,.(laughing gas) because they have a better filter to get rid of the harmfull stuff, that somtimes get's mixed in the bottle. well thats it for now, any more questions just ask. (it s a bit long)