Probably an easy question but on a 2007 tahoe my factory injector table is 36.4 from 18 psi to 58 psi and not graduated as say an 09 cts-v which is as low as 30.5 at 18 psi and high as 71 at 111 psi. So my question is does the ecm control the psi differently in each vehicle? My tahoe not regulate the psi from high to low and the lsa does? I have a lean tip in I have been chasing and now looking into things like this where maybe it's my fuel pressure settings should be more like the actual truck and not the lsa blown engine. I do run the stock lsa 52 lbs injectors with the blower on the 5.3. Just no matter how I dial in the transient tables or my ve I get a lean stumble so looking to this now as truck seems to hold 58 psi fuel pressure no matter where I am at in the throttle. It's also a factory flex fuel truck so had the better pump and larger injector stock if that matters in figuring this out.
Also should all the other tables match the lsa injector data or my trucks factory data like flow rate multi vrs iat???? I ask as the 2013 lsa zl1 is different from the 2009 lsa cts-v and of course my 2007 tahoe 5.3 flex fuel is different then both. Also short pulse adder min injection pulse injection timing things like that are they all for the injector or for the engine itself as per cubic inch and cam size so should leave that factory to match my engine? I have a feeling my lean tip in is in these settings and not my tune so much as I have tried redicilous measures to over richen it off idle and never gets better. It just make driveablity terrible and still has off throttle lean tip in issues.
Thanks