lbz for in a lly now it wont build rail

DIESELMAFIAPER.LB7

<----new hotness
Jan 17, 2010
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idaho
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So i put my old lbz reg (only had 8-10k miles on it) in my dads lly today. Well get done start it up starts fine idles smooth but around 9k rail so i adjust the current table flash it in and start it same thing and now it spikes rail on start up and then sits at 9.6 l rail and wont move from there and getting a p0089 code wtf?

Did the reg take a shit magically after working just fine in my truck? Im pissef i havr to tear this ignorant ***** out again and put the old loping pos back in but at least it went down the road. Unless someone can point me to something else
 

ikeG

Oughta Know Better
Apr 19, 2011
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Western PA
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Mine loped at idle no matter what i did to the stock OS. switched to 8758 OS (or is it 8578??) and it went away perfectly. Didnt have the rail pres issue like you, though