STS part throttle boost
02-07-2007, 11:26 PM
#12
Originally Posted by TURBO8
It doesn't sound normal to me. If I baby it, I go to 0. If I go mid throttle I am well in boost, (at least 10 psi) but I have a manual trans and I run 20+psi on the street. This info may not be helpfull. Sorry, I don't know the response yet with an Automatic.
but with an auto
02-07-2007, 11:29 PM
#13
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any idea why it would be like this? I was thinking maybe a worn wastegate spring since it has about 20k on it, but it still works fine under WOT.
02-08-2007, 12:07 AM
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02-08-2007, 09:28 AM
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Sounds normal. I think it's more accurate to talk about boost in terms of RPM- I don't build any boost until ~1900 rpms or so, and don't see full boost until ~3000 rpm's... full throttle or not.
02-08-2007, 10:00 AM
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Originally Posted by Wilde Racing
sounds normal to me, but let me make sure I have this right. Part throttle 0 psi and the waste gate fludders, or does it just sound like rushing air???
02-08-2007, 08:20 PM
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Originally Posted by adam1803
It's like rushing air
You can put a piece of metal between the cab and bed over the air filter, it will make the "air rushing" noise much quieter....
Turbos will build boost when there is enough load on the engine... When I tow my boat I build boost much sooner than normal, so much so in fact I have a separate "tow tune"
02-08-2007, 08:25 PM
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Originally Posted by TG02Z71
Where are you getting your boost gauge signal from? My truck builds boost at part throttle, at about 25-30% throttle I can keep it out of the boost but any more than that and I see boost
Its off the manifold