a COMPLETELY stock r33 gts with std everything as per the nissan factory i mean exhaust, filter everthing wouldn't do a 13 sec time, like someone else said some of you can't even run a 13 with mods so how u gonna do a low 13 stock? an auto r33 with full 3" exhaust, pod filter hks type, 12-14 psi, advanced timing and avgas will run a low 13 like a 13.2 or around this eg SUBZERO did it with try09? think it was? when it was mildly modded!