Since we dont get the RTEK chips, is there anything that can fill the gap of a full standalone? I dont want to go complete standalone till Im out of college and have the necessary funds to do it right. But, I got an internship and I will be doing alot of work to my car and I know that the SAFC isnt going to cut it for me as I start tuning it. Do I have any options?

 

Check out the MegaSquirt, in the "Engine Management" section of our very own forum

 

For the S5,Greddy emanage "blue" is a good piggy back choice.Roughly the same cost of an apexi SAFC but many more advantages.16x16 "airflow" and "injector" maps,timing control,"additional injector" map(16x16) to control 2 additional injectors.But you need a laptop to tune it,unlike the SAFC.
The "Ultimate" e-manage would be, well the ultimate piggyback.But it seems to have problems that still need to be worked out and is almost twice the price of the "blue" version.