I have 1999 Cobra with only just over 51k miles. I have recently added BBK throttle body and pulleys, muffler set up (waiting on my x-pipe, also BBK) and a JLT CAI and also just got my Diablosport tuner. Last year bone stock i was running the 1/4 mile at 15.2s. Before you say anything, I am at 5200 ftabove sea level. Altitude is a factor. With everything on so far, in 70-80 degree weather I am running a 14.4 but average is 14.5s. I just can't seem to break the 14.4 second barrier, My reaction times are .1 or faster. My ultimate goal is to hit the high 13s mark like 13.8-13.9 without having to use nitrous.

 

Forgot to say I am looking for suggestions. I have the BBK x-pipe and Steeda bushings for wheel hop on order.Also thinking Drag radials. but open to suggestions

 

gear 4.10 or 4.30 will def put you there

 

just an FYI, your RT has nothing to do with your 1/4 mile time...the clock starts when you break the start beam

 

I ran almost the same times at 5800 ft. It sucks huh. Anyways some 4.10s and a set of drag radials should get you there.

 

I ran a 13.94 in my Vert in OH. Sitting on 18 inch wheels, with a 2.35 60 FT trapping at 102.65. With only an Exhaust and A tune.