Okay – I had a five-speed Ford Focus ZX3 with exhaust, a drop-in K&N air filter, and an underdrive pulley. Other than removing the spare tire, no weight reductions. I ran 15.8 on stock 16" wheels and tires.

If I can run 15.8 in a near-stock Focus, I can't imagine running any slower than that in my 1998 EX coupe. They're very similar performers – and the EX has better gearing. I bet I could run at least 15.7 in my EX. I do have a little bit of experience though.