I was looking into general car stuff like storage and lights the general stuff. I ran into a device called a "nitro OBD2" they have one to save fuel one to generate more power and stuff. Looking into them more I see many mixed reviews from general people no big car guru's (that I have found), some fun youtube videos to watch.. But my question is do things like this really do anything or are they a scam?
closed as primarily opinion-based by DucatiKiller, JoErNanO, anonymous2, Pᴀᴜʟsᴛᴇʀ2♦, tlhIngan Oct 6 '16 at 16:13
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Some just READ data from the OBD2 port. Others like the DiabloSport handheld tuner can modify the engine tune IF the model supports it. I have no idea if the NitroOBD2 gadget does anything it claims to do. It makes my spidey sense tingle because the price is too low. Handheld tuners that work are not cheap.