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  #21  
Old September 7th, 2013, 06:23 PM
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900 F is crazy low for an upper limit. You could sit at 1100 all day every day and never hurt anything.

Peak boost is set by the wastegate actuator. As long as there is enough fuel, boost is set by the design of the turbo until the wastegate opens.
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  #22  
Old September 7th, 2013, 10:59 PM
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Thanks John. That's what I thought. Since it was my first long trip with the newly installed VNT and first time for me pulling a trailer I went very conservative on it. So is 1100F the upper limit of "all-day-long" driving? If so I'll set the alarm there. I'm also considering turning up the fueling just a hair.
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  #23  
Old September 8th, 2013, 08:57 AM
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I think 1250 would be a good buzzer setting. It only takes a second maybe two of backing out to drop the temp a couple hundred degrees. EGT readings should always be before the turbo if you are relying on info obtained here. Downpipe egts are considerably lower. Boost readings should be taken from the intake manifold plenum not the t off the turbo.
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  #24  
Old September 8th, 2013, 09:00 AM
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Good deal. Yes the EGT sender is located pre turbo on the exhaust manifold (see VNT install thread) and I sourced a metric barbed fitting that plugs right into the existing threaded hole on the back of the intake manifold. That way no mods need to be made and its out of the way.
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  #25  
Old September 9th, 2013, 10:20 AM
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I agree with the 1250 buzzer setting.
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  #26  
Old July 7th, 2014, 04:12 PM
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After installing the full-length Alisport intercooler and maintaining stock IP timing settings, I still have yet to see EGT above 875.
Full speed, uphill, flat-out highway run, uphill, 875 tops.
Normal driving conditions around town it ranges between 450-650.


Tuning the fuel screws next week and we'll see where that gets us (or if they've been played with before).
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  #27  
Old July 7th, 2014, 04:17 PM
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you have plenty of room to turn that fueling screw now that you have accurate reading. you are running on the cool side. I'd go at least 1/2 to 3/4 turn at a minimum, then drive it a bit. on wide open flat over 65, if you aren't between 950-1050, you are still under-fueled in my opinion.
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  #28  
Old July 7th, 2014, 04:59 PM
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Quote:
Originally Posted by Overlander View Post
you have plenty of room to turn that fueling screw now that you have accurate reading. you are running on the cool side. I'd go at least 1/2 to 3/4 turn at a minimum, then drive it a bit. on wide open flat over 65, if you aren't between 950-1050, you are still under-fueled in my opinion.


Perfect, thanks Mark!
It would make sense that I'm under-fueled. I'm just not building boost early enough and as high enough as I should. From what I've gleaned here, you can't make boost without fuel.
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  #29  
Old July 7th, 2014, 05:07 PM
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My 200tdi with stock IP settings will hit 1200 to 1250 when climbing to the tunnel on I-70 (over 11,000 ft elevation). I recently returned from a lengthy trip at sea level, and the EGTs were way down on similar grades. I assume this is because there is a lot more compressing going on at the higher elevations.
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  #30  
Old July 7th, 2014, 06:00 PM
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You really need a boost gauge too. As you turn up the fuel screw also keep an eye out the window looking for black smoke (which is nothing more than wasted fuel).
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