Had the car running very well on MAF as long as I kept it less than 5300rpm where the MAF maxed causing the engine to run lean above that point.
So I installed a 2bar MAP sensor and converted over to 2bar SD enhancement. The sensor is tracking perfectly fine with boost so it isn't a sensor issue.
Once I got the ecm to enter SD mode the car would hardly run if at all. I had to keep adding and adding and adding to the VE table to get it to run. I'm at nearly 200% of my original VE table and the engine still wants another 60% fuel.
This doesn't make sense to me. The injector data is solid and as I mentioned, it ran very well before.
Anyone have any idea what is going on with this?
I have attached my old and new cal files. You will notice that I did some weird stuff with PE and VE so that I can run it on the MAF until I figure out what is going on. Also, I still have MAF error at 0hz, but changed over to No error reported to get the MAF back in the system. You will see the VE in the 2bar map is crazy high just to keep it running.
Setup:
2005 CTS-V
6.3L LS6 (4" stroke)
9.5:1 compression
Magnusen MP112 Supercharger with 2.8" pulley
4.5 - 5 psi
Kelford SS108A camshaft
Stock ratio rockers
Car made 553ftlbs and 502whp on todays MAF based retune.