He has tuned several vehicles with uprev since he got it and a few 370Zs, Titans, 350Zs and G35 even a couple boosted ones with COBB he also tuned GTRs and 370Zs. The peak gains are minimal but the gains under the curve are good, and those are the ones that matter for day to day driving not sure if you understand that? I am not sure why you care you dont have a 370Z anyway
You cannot compare gains with other vehicles especially turbo vs NA it is not the same at all he tuned a GTR recently and gained close to 100whp what does that mean to 370Z guys....nothing. Cam has tuned more Sti and WRXs than anyone in Alberta if you go there typically 3-4 of them are at his shop at all times getting work done and an assortment of Supras, GTRs, EVOs, RX7s ect...he knows what he is doing he has been tuning since the 90s very few guys can claim that.
I have had several cars worked on and tuned be Lightspeed I have been happy with their work, that being said no one is forcing you to go there no one is promising you will be happy if you do go to them....find another shop if you don't feel comfortable going there, you should just go and find a shop you do feel comfortable with I went to several shops over the years in Edmonton and Calgary before I ended up at Lightspeed