Hi guys.
Just bought my 3rd G40 a week ago. My previous 2 had toothies and stage 4 charger plus a few little other bits. They both seemed to boost at around 15psi 1bar. My new one is also on toothies, stage 4, cam, 1341cc fmic and a few other bits but it seems to only boost at 10psi, doesn’t matter if I’m wot at 2000rpm or 7800rpm it’s still at 10psi. Could this be a faulty boost gauge? It seems to go very well.
It’s plumbed into the vacuum line from the fuel pressure regulator so the correct place. The pipe is fairly small though, could that be the issue?
What’s your thoughts?
Cheers
Tom