Hi I just bought a GTR34 vspec, and want to make sure everything is safe.
now the car currenly run 380kw on wheel 21psi, boost by t517z*2. the turbo lag is really big, full boost around 6000rpm. and the AFR is look a bit lean, 4000rpm about 12AFR 7000-8000 around 13AFR.(I don't know about GTR, but my evo is allways under 12) the owner told me is very safe, no need retune. and the injector is nismo 600cc. if i don't want tune up the power do i need some bigger injector???the highest injector duty is about 90%+. but i'm sure its not 100%
the car only done 2500kms after engine rebuild. so i may need change to full syn engine oil when its up to 3000kms.
and the car doesn't have power fc hand controller. do i need one???
can you guys give me some suggestion, what should I do next??? retune it?? bigger injector?? etc....
the car running really good, its not like a 10 years car. and many nice mods. easy daily drive. I just don't like the big turbo lag.
please help thanks guys!!!