Ok Let me try to explain this. I have a 2009 r efi. I had a vortex ecu on the bike and it runs fine no issues. I took that off and put the stock ecu back on and it just idles but it idles hi and pops at times. When i try to rev it it will just sit there and start popping like it is cutting out like no fuel or spark is cutting out. I put vortex back on and runs fine. I put a different stock ecu on from another bike does same thing. I put the ecu from the original on other bike and it will run on that bike no problem. What should i be going after that the vortex is not using but the stock ecu needs to run?