Quote:
Originally Posted by Formulajones
That's most likely because of the tune. The LS engine, particularly with the passenger car intakes, have a tendency to run the #7 cylinder lean. When I was tuning them it was pretty common to increase injector pulse width for #7 to richen that cylinder a bit.
Just a little tid bit for those closet LS guys I know are lurking here  |
Yeah can't do that on the factory P01/P59 without hacking the binary to get access to injector gain(factor) vs cylinder. Running the factory PCM is the common "cheap" combination we see here - i.e. the pull a junker and run it concept. Some guys get away with flowing injectors and putting the fatter injector on cyl7, but sometimes they all flow near perfect like my Siemens 660's or the 1000's in my LS3.
Aftermarket PCM like a TerminatorX, Megasquirt, Haltech, no problems to trim cyl7 injector higher and trim the other 7 at 100%. But you're also up $1-2.5k just in engine management to do that. Which went against the owners philosophy of that motor which melted #7, 3 times, unfortunately. And others...
