i finally got my car tuned today at pfispeed, i have ctr pistons b16 head gsr block and a 60 shot of nos, it made 176 @5,500 rpm, then the clutch started slipping they said and it wouldnt rev all the way, but it was also making a popping or back firing noise ? my nos kit is programable so should i decrease the nitrous to like a 25 shot? or is it just popping becuase of the clutch, it also feels much faster without nitous he set the vtec engament at 4,800 rpms so idk let me know what ya think

 

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