Has anyone broke into the 12s at the track and if so what are your mods? I am certain a stock XJR will not make it...

 

A few guys on the UK forum have, they have Nitrous or Twin-Screw to do it.

Davey (Twin-Screw) 12.8101 @ 114.79 mph
Jerry (Nitrous) 12.92 @ 110.8 mph

http://www.jaguarforum.com/showthrea...=74994&page=16

 

Any non nitrous setups? Looking more for pulley, remap, exhaust, intake, guys that may have cracked into the 12s...if its possible...

 

Doubt it would do it, maybe might have more chance with Drag-Slicks and a LSD

With the mods you mention, expect the low 13s.

 

Do the exhaust and the intake, and make sure that the exhaust has an x-pipe in it.

Leave the pulley & tune to later.

You really need an LSD and to change the diff ratio from the stock 2.87:1 to 3.31:1 if you want to crack 12's...

Edit

And run 18" wheels, the 20's are bad for acceleration...

 

I thought there was an issue with changing gears? Can we program for them now?

 

Yes

 

(When Where and How) Got 3.06 waiting for my XJ for 2 years now LOL

 

Well I guess when I splurge for a new diff.....GEARS HERE I COME lol Need to make up for taller tires....Now can we also deal with torque management? Or am I dreaming>