Just got my R33 GTR tuned today. Pretty happy with it as it was running like crap before.
I just took it out for a blast and on 1 occasion it hesitated a bit around 4000rpm and then took off like a rocket. I will look closer at the rpms tomorrow.
Should i be concerned about the AFRs between 4-5000rpm. He said take it back if I have any issues. The last owner said the cams might need timing.
The guys at PZP are good blokes