2000WhiteGT

Is there a retune needed after putting in the cold air intake, bigger throttle body and plenum? I just bougth this car and it has these things done but I'm not sure if the previous owner did it if it was needed.

contentsunderpressur

No, you don't have to retune it for that for it to run good. To get max hp from it you would need to get it tuned but I would do everything I could to it and have it tuned one time for all your mods instead of spending the money every time you install something else.

Quick Shot xMLx

No don't even worry about it. Those mods yield minimal power at best. Won't need a tune until you get full bolt-ons (headers) and it still isn't necessary.

Dan04COBRA

It's not a major worry, but if you had a pre-existing lean condition, it just got worse with the added air flow.

Frostbitten

you need a retune since you added the cold air kit. I know its not as crucial as an 05, but your still changing amount/direction of airflow getting to the MAF.

stang2000

no you don't need a retune.

lizzyfan

If you have an SCT/Diablo tuner that came with it, a touch up tune would be good since you changed TB/Plenum. If that is not the case, get all the mods first (as stated above) and then get a tuner and have it dyno tuned