The osiris UpRev tune can be a mail order but RDZ has the package in house… It hooks up through the OBD2 and can set up to 3 maps. It’s just a reflash which will change my WOT to almost 100% since the VQ35DE is set factory at olny about 85%. Should see about 8-10 hp with the tune alone from everyone on g35driver that has had it done w/ dyno sheets. No point in me going with a standalone such as haltech or AEM EMS seeing as I am not going FI just yet. I don’t have any gauges in the G as of right now but I have an A/F, and triple gauge pod alone… getting the parts together before I make the trip to CT