that's what I did, you can also use your ap to store the tune that yimi does for you. For my next mod imma buy injectors FP and turbo and have yimi tune me 2 maps. 1 for e85 other for ca 91. If I can't find e85 you can swap the map to 91 and vice versa. I'm running an etune from perrjn right now on my ap