This has been a bit of a project for sure, 2003 XB9 that I swapped the motor in this past winter. Got it in and running pretty darn good until yesterday (friday). Now it will not even start.
Quick backstory:
Weds: *Rode home form work on Weds evening, running great, low gas light came on.
Thurs: *start it up, running rough, missing a bit. DIes a couple times while warming up. Get to gas station fill up.
Runs really rough on the way to work, need to keep the RPM's up and dies at lights. (kind of feels like
it's running out of gas??).
*On a break, I start it up and try to ride it. Running terrible, missing, diying, and LOUD back-fires!
This is where I come clean on a couple of things.....
I was running a non-stock exhaust (a cut down yoshi can that was re-packed, sounded great and ran great...)
I purchased the ECM spy and a cable and have yet to get it to work. Hours of farting around getting the cpu to rad the bike being hooked up has been frustrating. Constant error messages (NAK in particular)

*Put stock exhaust back on (it'll stay on as it actually fits a lot better, and I trust it more)
*no help, bike still runs terrible and is getting worse.
Try to run a code check (which I have done successfully in the past) and Nothing shows up, no codes, no blinky lights,nothing. In fact, I notice when I turn on the key, the fuel pump is now not even running.

*Saturday. Back at my shop, where dead bike is and now it will not even start. Pulled two separate units
the ECM and inspected, look good. No blown fuses.

Now the bike just turns over and will not fire.

ANy obvious, glaring things I may be missing? ANy way to test a ecm even if not hooked up to my computer?
I'm happy to mail six packs to dudes who can help with stuff like this! (have done it in the past!)

Thanks guys!