Maxed out VE with only 8 PSI ??

[robof16]

LS1B, 6.0L turbo on pump gas, FIC 650cc injectors, with referenced FPR, COS3, SD tune...

I need a sanity check on this. Truck runs perfectly but, at 8 psi, I'm very close to reaching the boost VE table limit of 10.0 g/k/kpa, along with air flow g/cyl closing in on 5.0.
Does this make sense?

[joecar]

Does not make sense.

Post pics of IFR and VE tables.

Is your FPR manifold referenced?

Are you seeing a MAF DTC presently active?

[robof16]

Thanks for the reply.

FPR is referenced, should be plenty of fuel with FIC650s at 70% duty cycle and Walbro 525 pump but don't have a way to monitor fuel pressure while driving.

WRT the MAF DTC, I don't have one. See the following thread:


https://forum.efilive.com/showthread...behavior-in-SD

[joecar]

You 105 kPa columns are different.

[robof16]

They look the same to me, must be missing something...

[nonnieselman]

Need to check fuel pressure. Ive had this happen on a bunch of customers vehicles. You can make the wideband happy but pressure falling and high AirMass calculations.

[robof16]

That makes sense. FPR checks good, add a little pressure and fuel pressure rises equally, etc. Just need to rig up a way to see fuel pressure while driving...
Thanks

[robof16]

Test drive and fuel system seems to be working fine. Pressure rises as it should, I think, roughly 58 psi + boost.

[joecar]

They look the same to me, must be missing something...

Sorry, my mistake.