Will I need a retune?

['13_ImpactBlue_GT]

After receiving my SCT Xcal 2 I ordered some gears, will I have to get the SCT retuned to accomodate the new gears?

 

[Ste]

yes.....for the speedo. Or u can get a recalibrator, but since u have the chip id just flash it...

 

[RedBullitt]

basically if you just get your ecu flashed or chipped you need to have them take the gears into account. if you get a hand held tuner you can just change it yourself. otherwise your speedo is going to be off etc.