Originally Posted by RotaMan99
Rtek is a fuel and timing EM chip that can do way more then the SAFC can.
If you have a Rtek, you do not need a SAFC or another piggy back or a standalone. You do not want to run two engine managment controlers together at all.
You missed that he had a 1.7, not a 2.0. The 1.7 is not programable like the 2.0.
With that said, I run an SAFC with my 1.7 to dial things in a bit more. There's too many different types of injectors out there for the 1.7 to work perfect on every setup without some fine tuning. I would highly recomend a wideband to use in conjunction with the safc.