Why do people think VE tuning is worthless on the LSJ's? I've seen it mentioned a few times that its really not worth messing with VE tuning to much. But isn't that the main map. I mean everything is calculated from that MAP. All the multipliers are multiplied by that map. So wouldn't that mean that its the most important map to tune?

I mean even though the car is a MAF based car, VE is VE, the MAF is used to calculate Volumetric Efficiency which means that VE should also be tuned before MAF tuning takes place
yet I was searching earlier and a few known good tuners are saying it doesn't matter which is tuned first?

Discuss please