Help needed 1227747 tune

**Sheponaro** · 02-15-2021

Well the ve tables definitely go over 100, I thought this was ok... oops. If I adjust the BPW constant by a percentage can I change the fuel tables by the same percentage then just increase the areas that need more fuel?
I know the injectors are up to it as at full load 6000rpm we were still running slightly rich.
The only other thing that is happening is the manifold vacuum starts to drop (less vacuum) at high rpm due to restriction. I think it is possibly the intake setup as it is a 4wd and used the factory air box.

**Six_Shooter** · 02-16-2021

I never did that by percentages, I just adjusted the BPW and the main VE table until I got a good idle, and leave enough room in the VE tables to stay below 100.

**Dieselsj** · 02-17-2021

Originally Posted by Sheponaro

Well the ve tables definitely go over 100, I thought this was ok... oops. If I adjust the BPW constant by a percentage can I change the fuel tables by the same percentage then just increase the areas that need more fuel?
I know the injectors are up to it as at full load 6000rpm we were still running slightly rich.
The only other thing that is happening is the manifold vacuum starts to drop (less vacuum) at high rpm due to restriction. I think it is possibly the intake setup as it is a 4wd and used the factory air box.

If there was a restriction in the intake anywhere (from airbox to throttle body) then manifold vacuum would actually increase at high rpm - the engine would be trying to take in more air than the airbox/tbi would allow.