Don't know about Philly, but if you have access to e85 or race gas, it would be the next step. Better yet, a LSD would be better. Oh, and muffler delete if u are manual.
"I'm Bad, and That's Good. I Will Never Be Good, and That's Not Bad. There's No One I'd Rather Be Than Me" -Wreck-It Ralph
Mods...Sparta Evolution\MFactory/Recaro\Macht Schnell/Evolution Racewerks\and more