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Gauge readings.
Ok, i just recently installed gauges in my truck and i've read around and seen a few numbers as to what i should look for. Correct me if i'm wrong, Pre-turbo (in the manifold right before the up-pipe) EGT's i shouldn't go over 1250ish, now is that sustained? or short bursts of more would be fine? cause right now, even in my 80 econ tune i can hit 1200 within 7 seconds of wot... and the 140 tune does about the same.. but i've always let off as soon as it hits 1200 and it drops quickly. tranny temp, i shouldn't let it go over 220? around town its going around 160ish. Now for boost, i've heard the turbo won't hold over 25lbs but a short burst of 30lbs is ok?, in my 80 econ tune i can hit 28-30lbs and in my 140 tune it'll hit 30 and appear to keep climbing, but i havn't let it climb over 32lbs. pretty sure the turbo is crapping out, have pretty bad surge/flutter even if not pulling anything.. What are yalls thoughts? or, i thought i saw a page with all this info on it before but i can't find it again..
Thanks for reading, Mitch. *EDIT* i went out and drove it today, in 80 econ EGT's will hit 1200 and stay there, until 80mph+ then it started to crawl a lil higher but i ran out of road to really see it lol... Last edited by mitchdog7; 09-20-2010 at 10:30 AM. |
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Just think that the 1200 EGT is whats hitting your turbos impeller. I try to keep mine at 1000 or below. I have never gone over 900 degrees and that was at WOT empty and I have a superchips tuner on the extreme setting which is supposed to be 114hp max. The most boost I have seen is around 20 but I think I have a leak in my intake. Your egt's are what worry me as they seem very high.
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You can run at 1250 pre turbo all day every day.
Short bursts over that are ok. IE passing, racing, sled pulling, climbing a hill Boost numbers you can hit 30 often. It wont live long at 30 constantly though |
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what is normal turbo psi for just cruising?
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Thats gonna vary with terrain speed and tuning but anywhere between 3-10 pounds without a trailer depending on speed
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thanks. I thought the 10 pounds I see were low but guess not.
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