I HATE 13s!!!

[RTanner]

Tried again yesterday and the best i got was 13.24 @ 99.5mph with a 1.75 60ft.....STILL wont hold rail pressure with one race tune, drops to 17k by mid track. Different race tune held better pressure (21-23k) but et and mph was the same. Rechecked bottle test and NOTHING leaking past plug, lift pump holds 8 psi down the whole track. WTF!!!! I'm ready to give the F up!

 

[paint94979]

that might be all you truck wants to run... I'm guessing it is really heavy? Who's tunes are you running?

 

[RTanner]

No heavier than anyone else's ccsb, Mike and Rob do my tunes

 

[ChevyDieselLLY]

change out the tires, those 20" rockstars are not helping you any.

 

[adas]

1.75 60ft you should deff be at a 13.0 or lower....I'm having a fit too because I'm in the low 13's too, but for me it's because i can't launch it in 4wd because i rub like HELL with my t bars down

but I ran a 13.5 in 2wd with a 2.1 60ft with 22's. So sounds wierd.

 

[mmasuperman12]

i hear ya but i just hit twelves friday night, went down to a 235-85-16 lowered the air pressure way down and still only had a 1.89 60' but went 12.85 @ 104.95 followed by a 12.9? @ 105.00. two weeks ago i hit 13.017 that is frustrating when trying to get into the 12's!

keep on gettin after her, its such a relief once you hit it, i was basically dancing in the cab!:thumb:

 

[Akdiesel]

My CCLB with 20" rockstars and 305/50 proxes cuts 1.69 60s and ran 12.73 at 106 at 7200lbs...keep after it...as for the rail pressure maybe you have a weak cp3

 

[DIRTYMAX1]

Maybe you can try opening the regulator on the cp3. My truck is a 2010 lmm ccsb with a 4in exhaust tierod sleeves and a custom tranny safe tune by PDP and it ran a 13.19 @ 102.80