Im intalling today 5/16 spacer to my vortech 350z with 3.33 pulley..do i have to retune the care or its ok to leave it that way..my targert afr now is 11.4 full throttle but is very expensive here in dominican republic tuning cars...

 

are you chaning the pulley size too, or are you already running the 3.33?


Tom

 

received the spacer?

 

Better get a retune, tune is not all about at full throttle A/F. That is why, most of members before they go get a tune, they get stuff much as they can. That save money.