Car has recently started to become hard to start. Sometimes it starts on one crank, and others (usually after sitting for a few hours) 2 or more cranks.
When I get on the gas and reach about 9-10psi, the car starts to hesitate, and makes a popping noise from the exhaust and wont accelerate anymore.

I have no datalogging tools. PDA took a shit on me a while ago.

Do you think that this could be timing related?
ECU detecting knock?
Camshaft sensor issues - relating to the hard startup

Thanks if you can provide suggestions/help.

Just taking a guess, but it sounds like it is not getting fuel. Check the obivous, fuel filter, fuel pump, etc, maybe clogged/dirty injectors. Like I said, that's just a quick guess.

Another may be weak spark (coil, wires, plugs), or a timing issue.

Yeah, sounds like a fuel related issue to me..Can you check your fuel pressure? Maybe check the FPR and the vac line going to it as well. Could be a failing fuel pump/clogged filter..I'm assuming you have a higher flow intank fuel pump? Did you do the fuel pump rewire mod? If not, then you really want to do that. If you did, then check your wires and/or relay.