LAGA Posted March 15, 2008 Report Share Posted March 15, 2008 (edited) I found a dyno tuner just outside Chicago, Finish Line Performance. I talked to them in person and will be going to have them tune my 07 NBS VMAX, with the 4l70E trans. MY question, the tuner I talked to suggested we leave the line pressures for the trans at stock levels, is this the right thing to do? I have done a lot of reading on both custom tunes and mail-order tunes and most either raise line pressures or install a shift kit. Which one is better? Are either necessary? The truck is a daily driver that does not tow. Thanks Edited March 15, 2008 by LAGA (see edit history) Quote Link to comment Share on other sites More sharing options...
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