What am I missing here? EGT problem?
Bit of a long explanation but stick with me here.
*2005 4 series Patrol, ZD30, Auto, Stock turbo @ 14.5psi, NADS (dawse, catch can etc), 3 inch lift, 35's, 3 inch exhaust. RedArc EGT gauge (unsure where the probe is installed at this time)
*Car had two people NOT towing anything
*EGT gauge set to "warn" when temps go 575
Flat road, 110kmh, OD on, EGT sitting at 500-550, 2400rpm, But will go up to 600, Have to keep boost under 3psi cruising otherwise warning goes off, I lose speed sitting at 3psi obviously. So I have to switch OD off to keep speed(inturn revs go up to 3500 :( ). I have to keep flicking between OD on and OD off to keep speed consistent and EGT temps under the warning light.
Highway with an Incline (for instance, roads coming into Adelaide from Melbourne that I just drove). Start at 110kmh with OD on, EGT sitting at the same as above. The minute I hit the slightest incline leading up the hill, I have to gas it a bit which in turn temps rise. Switch to OD off. High revs as above, Temps go up to just under warning, But I have to back off the speed to be able to keep temps down. I fell back to 80kmh at least 4 times on the way in to Adelaide from Murray Bridge.
Correct me if i'm wrong; With OD on and rev's down I should have better fuel economy right?
How/what can I do to get these temps down? All I want is to have OD on and low rev's for long trips, without the EGT going through the roof and then having to switch to OD off (i do country km's a lot of the time for work). Around town, The cars great and i never come close to the warning light. Its when I do 100-110, I can't keep the speed consistent and the temps down.
Excuse the noob questions, Trying to wrap my head around this one!