So I have been having problems with my bike for a good time now. It all started last winter when it started to get cold down here in tx. I ride year round and once it got cold my bike would start for nothing. It would literally take me about 30 mins of cranking while it was on a battery charger to get it running. I tested the fuel pressure and nothing. So I ripped it apart and put new fuel pump,regulator, and filters. I also went ahead and cleaned the throttle bodies, air filter, and put new plugs and fresh oil in. Bike ran like a bat out of hell. Now recently I have been having problems with the bike running rough and big exhaust backfires when decelerating. Especially at higher rpms and dropping gears. So today I got out and did some testing. Plugs are good. No intake leaks. No exhaust leaks. Checked the fuel pressure and bam a whole 32 psi and then pressure drops to 0 psi as soon as the pump stops. So my question is, do y'all think I have an injector problem? Ex. Injector stuck open causing pressure to drop instantly and causing the bike to run to lean or rich and causing the rough running and backfire??? Y'all let me know I'm out of ideas. Oh and for upgrades is has k&n filter, Arlen Ness swept cut exhaust and has been dyno tuned. All performance upgrades where done around 500-1000 miles. Bike has 18,500 Now. Any help would be appreciated. Thanks.