I'd like to use a 125 shot dry Nitrous but I know my stock fuel pupmp isn't up to the task. My local shop is telling me not to bother with a 255lph and that a 190lph will be plenty. What confuses me is that they said that a 255lph is no louder/hotter/less reliable/heavier/anything than a 190 and it's only $20 more than the 190lph. So why in the world shouldn't I just get the 255? Is there a disadvatage to a 255 vs. a 190lph?

