4lb lower pulley tune question

[MCT]

Hey all. I had a JDM 4lb lower. Switched it with a Metco. Does the car have to be retuned?

 

[MG0h3]

Not familiar with either of the products but I would assume that are nearly identical in diameter so no, no need for a tune.

I would verify the size though.


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[4sdvenom]

Correct. If they are the same size pulley there is no need for a retune.