Gooder Made Chevy
June 2nd, 2013, 11:20 AM
Im trying to straighten out an overboost issue with a DSP 5 tune on an LBZ. The truck typically trips a P0234 and goes into limp mode while pulling a long hill with a trailer. It will trip the code occasionally while not hauling a trailer. It will never do it on the main calibration. It is less prevalent with the cruise set. It can be re created like clockwork. I had the exact same symptoms with 2 LBZ and my LB7 was pretty much the same. The LB7 i fixed years back by maxing out B0751 ( yeah, i probably could have created a map and dialed B0751 in, but its mostly my puller/toy). I think doing so on the LBZ will make it way to smokey for a daily driver, and Im also not sure its going to work the same way. Any advice or suggestions would be great.