TB/Plenum combo require tune?

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Massachusetts
Does installing a 70mm TB and aftermarket plenum require a tune? Or can i just plug and play without worry of running lean?

I'm planning other mods such as a CAI and mid-pipe so i'm just wondering if i should hold off til i get all the parts, install and then have it tuned or if i can just put it on and be OK
 
throw the cai on at the same time while your at it and you still wont need a tune. i did the 3 parts at once and other than the car running rough for a couple days while it relearned there was no need to mess with anything.
 
K&N, Accufab tb, C&L plenum, PI intake, PI heads, o/r mid-pipe and mine was still pig rich on the dyno before the tune. I wouldn't worry about being lean. You'll love the throttle response. :nice: