AFR and air density altitude?

[dc_justin]

Recently I went to one of the classes at EFILive University. One of the things the instructor told us was that we should tune our cars in SD (OL) and leave it there. I questioned him and he affirmed that that was what he meant. What you are saying though makes more sense.

Tony

Was Ben Strader the instructor of that session?

I'll probably run into him a few times over labor day weekend and can verify that for you.

[caver]

THe PE table only comes into play at over 60% or so TPS depending on what you have set it to.
If you are in open loop SD you need to be playing with b3605

[superls1]

Recently I went to one of the classes at EFILive University. One of the things the instructor told us was that we should tune our cars in SD (OL) and leave it there. I questioned him and he affirmed that that was what he meant. What you are saying though makes more sense.

Tony

I am fairly certain that EFI Univeristy classes primarily focus on aftermarket EFI systems. I don't know of anybody running a Motec and a MAF. The issue of getting GM PCM's to reliably operate in Speed Density mode appears to be challenging at times. This is probably more a result of GM's VE table being more an "air mass" table vs. a Volumetric Efficiency table.