Question on ECUs
 

I'm looking to upgrade my s4 ecu to an after market one. anyone have any suggestions on what to get? i wanted to get a apexi power fc, but they don't make it for my year and its hard to find for an s5 model. I hear that you can put a fd on in, but you need to modify the coil pack, and i dunno how to do that. so, anyone have suggestions??

I think they sell the adapter for S4 somewhere online.

ya, but i can't find the power fc for an s5 and if i get the one for the fd, i have to mod a coil pack, and i'm not good with that kinda stuff.

Get the one that your tuner recommends for your goals. The common mistake is to spend a lot of time trying to select a good EMS, when what you reall need to do is spend a lot of time trying to select a good tuner. There are many decent EMS products on the market. Tuners... not so much. ;)

What do you think of the Greddy E-manage? Is that a standalone or piggy back? Someone locally tunes them.

Someone else installs/tunes HKS locally as well.

Pros and cons of each?