The '03 6 speed Acura CL-S runs mid to low 14’s. It’s heavy, but runs good times for its weight.
Seems like low 14’s is the standard for most japanese sport/luxury vehicles.
06 si there is one that runs 13.9 and they are heavy and that is stock i havent ran mine yet but everyone is in the low to mid 14’s which aint bad since it has no torque and some heavy as wheels stock
It’s hard to think of a lot of Japanese cars that are fast with NA engines…as mentioned before, some of the new Lexus cars are pretty fast…Infinity/Nissan also has some cars that are fast such as the G35 and 350Z.
If you want the fastest import cars that have NA engines then you have to look to Germany…BMW 550i (380hp 5L V8), 650i (380hp 5L V8), M3(333hp (3.2L I6), M5 (500hp, 5L V10) and M6 (500hp, 5L V10) are all pretty fast with NA engines…they can run the 1/4 from the low 13s to mid 12s depending on the car…
In addition, Audi has some fast NA cars…S4 (340hp 4.2L V8), RS4 (420hp, 4.2L V8) to name a few.
AMG Mercedes is getting away from forced induction and going with NA engines…they’re new cars are beasts and range from around 362hp to over 600hp.