I have an NA S4 and from what I read on here and looking at the site they do not have a stage 1 chip for an NA S4 yet. Was wondering if there were any other ecu chips that would work?

If not what mods would I need to do to use the Stage 2 chip they offer for S4 NA's? Right now I have intake and RB cat-back exh with the cat/pre-silencers removed (RB header/midpipe will be on soon as well). Would these be sufficient to run the Stage 2 or would more need to be done?

 

WHY?! Usually the ecu supports the mods, not the mods supporting the ecu.

Why do you want a stage 1? Do you know what the rtek does? It would be pointless on a S4 NA.

As with every performance mod question, you need to state what you want to do with the car, as in what are your power/drivability/longevity goals.

 

for a stock and modified NA,,,,the rtek is useless. the only good thing is flood clear and you can do that with a $2 toggle switch. if you go turbo or mild to highly ported NA then you need a good standalone