Hey guys, so when i bought my bike, it came with double 2 brothers slip ons. I am planning on sending my bikes ECU to get tuned and i was asked if i want the fuel mapped for my brands slip ons or full system. I had the 2 cats removed with the slip ons and the third cat was in my my headers given i have a 2018. Well i replaced the headers with oem 2013 ones which removed my last catalytic converter so my question is as followed; does my two brothers slip ons with all the cats removed (making it a straight pipe) constitute as having a full system? Please let me know- Nick

Your tuner should know what to do based on the mods you have. If not, find another tuner. There are many good ones out there.

That's right. ...although with your setup, it's understandable that even a good tuner might not be able to recommend a good way to go.