You just need some more seat time.
You got some real world expirence, just like bench racing it dosn’t work like more mods=better ET. So don’t be upset, you now have a good baseline to improve on. So have fun and work on it, your lucky the track is probly open all year. If the car dosnt have issues get them figured out. But if you wnat to improve your track times, don’t just add power, or money. And think thats going to be a anwser. When I 1st got my gtp was was getting 2.3, and after about 200 passes was down to mid 1.9’s on summer tires and got one 1.899 (225/60/16 dayton summer tires) Stock diff, axles, best was low 1.7s on ETdrags. thats a road you should wait for.