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S5 n/a r/tek. haltech or pfc. I looked at pfc and haltech and can't find anything for the fc. So my question is. With the s5 stock now and doing upgrades as affordable is rtek the best option?? Future if I keep the car is street port 720/1000 injectors. full exhaust, remove rat's nest. This car will stay n/a. and if so which rtek is right for me. Pro's con's i've heard some good and bad. Give it all I want an honest opinion.

Why would you need a 720/1000 injector setup on a streetported NA? Just using stock TII injectors (550/550) should be more than enough fuel for a big ass port.

460/550 is the most you will need. the Rtek is set up very well for the s5 n/a, it lets you control the 6 port and VDI rpms. I'd just use that. the AFM is not a big restriction on the n/a cars.