Yes yes and no.
Most guys do them in the truck, it'll firm up the shifts and no tune is needed.
If you have a tune though, you'll need a retune lol. Most tuners crank up the line pressure then the servo does it mechanically so shit is turnt up like lil john and shifts funny kay: :gnomesayin:
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fml. my story right now. lol needs a retune bad.
Double check yours is installed good first like I told you lol. Mine did the same thing yours does for a while till I had it retuned.
Thread jacking over :cheeky:
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bitch thought you were gonna buy mine
but you wouldn't have shipped it until Monday and I will get this one by Friday or Saturday :read: