sorry for the confusion.. 6 pos chip you can adjust on the fly..there nice because you dont have to stop and reprogram it. no you can not diagnostic with a chip.. im running a dps 6pos it works very well..its good for up to 140ish and i had stage 1 injectors worth about 50 more hp in my 03 and bb means ball bearing which spools up faster and is a more durable.. and sound sweet....... hope this is more help