Do I need to go to a dyno shop & have the 'stang custom-tuned after installing the items listed below?
* Ported/polished plenum & TB
* K&N FIPK
* New Midpipe
It's already been tuned by a Superchips handheld.
* Ported/polished plenum & TB
* K&N FIPK
* New Midpipe
It's already been tuned by a Superchips handheld.