harls
5th September 2010, 08:57 AM
G'day all,
I have just finished make the engine saving mods to my truck.:049:
Have taken it for a couple of test drives and adjusted the VNT screw accordingly (she now boosts to 18 / 22 psi with no spikes). The only thing is that when changing from 3rd to 4th the turbo lags and has no boost, psi drops to around 2 psi then climbs up to 4 psi and that is it. if i take my foot off the accelarator then reapply it slowly she picks up to 5psi and then takes off, however this is no good when going up hill as she struggles to boost to 5 psi after the gear change.. any ideas??? do i need to switch a vacuum line on the boost control unit or crimp a vacuum hose???
harls
I have just finished make the engine saving mods to my truck.:049:
Have taken it for a couple of test drives and adjusted the VNT screw accordingly (she now boosts to 18 / 22 psi with no spikes). The only thing is that when changing from 3rd to 4th the turbo lags and has no boost, psi drops to around 2 psi then climbs up to 4 psi and that is it. if i take my foot off the accelarator then reapply it slowly she picks up to 5psi and then takes off, however this is no good when going up hill as she struggles to boost to 5 psi after the gear change.. any ideas??? do i need to switch a vacuum line on the boost control unit or crimp a vacuum hose???
harls