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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

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Edited by DD-GTR
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https://www.sau.com.au/forums/topic/473610-how-do-my-afrs-look/
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They look fine.

Maybe the red line (high boost) could stand to be a little leaner
Maybe the black line (low boost) could stand to be a little richer

But in the real world, these are fine and go enjoy the car
 

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