Now I know I've used dragtimes.com before many times for times and sh*t, but cant a person easily lie and say what he wants about his time on there? I really find it hard to believe an 05 G35 running a 13.7 when the new 06 and 07 350Z's, which are supposed to be a couple tenths faster than the old models, have a tough time running 13.7 stock. Hell a 13.7 is 99/01 Cobra territory, along with LS1 GTO's and numerous other v8 cars.

 

nah, 13.7 seems to be with a perfect run.... usually see a tiny bit slower on average with the really bad ones being mid 14's

http://www.dragtimes.com/Infiniti-G3...slip-7374.html

http://www.dragtimes.com/Infiniti-G3...slip-9830.html

http://www.dragtimes.com/Infiniti-G3...lip-12189.html


heres a run with similar mods as stated by the OP
http://www.dragtimes.com/Infiniti-G3...slip-7325.html


it's a recipe for trouble for him without gears, a tune, and limping with the CEL

EDIT: just to back up the info because I too became skeptical on account of lieing... the 350Z crowd are also seeing rather phenomonal runs now and again

http://www.dragtimes.com/Nissan-350Z-Timeslip-8268.html

http://www.dragtimes.com/Nissan-350Z-Timeslip-2886.html

http://www.dragtimes.com/Nissan-350Z-Timeslip-2878.html

http://www.dragtimes.com/Nissan-350Z-Timeslip-2452.html

http://www.dragtimes.com/Nissan-350Z...lip-10477.html

 

As was said before, if your CEL is on your Mustang is probably running in limp mode... thereby cutting timing, fuel delivery, etc. There's a good possibility your car might be running slower now heh. Dyno tune would fix that and really wake up your car. You probably got driver modded too