Strange LBZ Issue

[MotorsportsArsenal]

So we datalogged and tuned another LBZ today and a few things to note. 1) there is no Barometric Pressure PID that I can find that supplies data for the LBZ. 2) the original truck has a spool issue (which I believe is a direct result of too big of an exhaust housing on the S475 on the truck). The LBZ we tuned today with 30% over injectors and a VGT ran awesome after we were done. It did exhibit the same fuel limitation until MAP pressure came up though (just not to the degree that the non-vgt truck in the datalogs above did).

[dhoagland]

Thanks for the follow up.
I was wondering about the S475 but thought maybe this platform could spool it.
Might be able to spool it quicker with timming? But probably not enough for a street driven truck with I imagine stock gearing..