Sorry in advance if i am not posting correctly, new to the site and it isnt working to great on my phone. But the car in question is a 2007 civic si sedan just turned 193k miles. Mods include AEM cold air intake, skunk2 full catback exhaust and aftermarket security system made by the company directed, unsure of sub brand alarm since i didnt have it installed. In ohio it has been getting into the below 0 temperature and my tensioner pulley has been going out so was going to start the car to drive to my buddies garage to replace pulley and S belt, buttttttt ot barely cranked due to the battery being dead. Hooked up jumper cables to my GF's car and then set off the aftermarket security system. Reset the security and now it cranks real fast like normal but doesnt start. . . . Fuel pump is kicking on and i smell fuel from the engine with the occasional backfire in the engine area while trying to start. The CEL is NOT on so i figured it couldnt be a sensor causing the no start. I will be pulling the plugs tomorrow and checking them to be fouled, checked all the main fuses to do with starting and running didnt see any blown. Also tried to start while spraying starting spray into the intake with the filter off. I am at a loss, the only thing i can think of is ignition coils or spark plugs. Possibly crank sensor or cam sensor but is it possible for those to be bad without having a CEL on?