What do you guys recommend ECU-wise for my RS that will not ever be turbo'd. My mods do/will include:
N1 3 pulley set (not ud)
random tech cat
brullen cat back
Is the stock ECU more than enough? I am worried about lean conditions with the CAI. So far, I haven't been very impressed with the stock ECU's ability to adapt to new environments, i.e, when I drive from the valley up to Tahoe, my car runs like it's using the fuel/timing maps from the valley. Trying to reset my ECU everytime I change altitudes is a joke. With my above mods and a new ECU, should I also be looking into a better knock sensor? For both of these, price is a major consideration...
What do I need? Thanks for your help!