Originally Posted by slvrwgn
When is EM really warranted? At what point is the stock ECU unable to adjust?
For example... I'm about ready to install an STi uppipe and Scoobysport downpipe (shorty) on my stock car. Does installing just an uppipe/downpipe warrant spending $800~ on having my car tuned.
Will I gain additional power, smoothness, AND safety by having my car tuned?
By installing a catless up and down the turbo spools much easier. It is also able to run more boost, and leaner, safely. EM is always a good idea if you are looking to optimize your setup.
Even on a stock car EM is a good idea in my book.