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Don, was this the entire trip from start to finish? Your EGT was above 1,250*F the whole time. Not good.
Man i am sorry that took so much work! I owe ya a beer for sure!
i wanted to see how things worked while towing 7k for about 15 miles back to storage, should have just took the laptop! Would have saved alot of work!
And yes almost the whole trip i saw it hit 1200 , hit record , tried to back out a little but the hill increases so ya gotta get back into it or your doing 35mph for awhile, went over 1400 at one point i was really expecting the truck to catch fire!
Again sorry for all the effort, won't use the cts for this again!
Don, I'm looking at this data, watching EGT above 1250 (by the way, so cool to have EGT with the other data), and the RPM low and wondering why not downshift at that point? That would have cooled it off. Your MAP appears normal (21-22psi) for that RPM range (2000 down to 1800), so tempted to say boost is normal at that RPM for a stock turbo as well (BARO is 11.8, so maybe 9-10psi?).
Really low ICP for that accelerator position though. The 4ms+ PW would lower ICP, but not typically down to the average 1600psi seen here, with APP% at 50-75% (75% APP is pedal to the floor on my truck).
What tune were you running on this trip? Wish we could see IPR%.
Here is a snapshot of the raw data Listor sent - the 1st few rows and the last few, with minimum and maximum values below that. I put the equivalent FORScan labels under that (my guess).
Don >> Can you check and see if these numbers match what you remember when viewing the CTS? You were pulling the trailer at 60-72mph in OD, with a downshift to 3rd at the end of it, yes?
I think what we are calling APP might be the TP column instead - not sure what that data is. The APP column has zeros in it. It would be good to know APP, IPR% or MFDES in order to know how much fuel is being asked for.
IAT seems high - is that sensor not near the air cleaner? If the engine is sucking in 160*F air, that would contribute to high EGT. Does not sound likely, though.
If we assume you did not have the pedal down more than 3/4 of the way or so (as the low ICP seems to indicate), it might be pointing to exhaust or boost leaks per FTN's suggestion.
Don, I'm looking at this data, watching EGT above 1250 (by the way, so cool to have EGT with the other data), and the RPM low and wondering why not downshift at that point? That would have cooled it off. Your MAP appears normal (21-22psi) for that RPM range (2000 down to 1800), so tempted to say boost is normal at that RPM for a stock turbo as well (BARO is 11.8, so maybe 9-10psi?).
I am working on your questions , had to grab the cts from the truck
Really low ICP for that accelerator position though. The 4ms+ PW would lower ICP, but not typically down to the average 1600psi seen here, with APP% at 50-75% (75% APP is pedal to the floor on my truck).
What tune were you running on this trip? Wish we could see IPR%.
I was in the 65hp daily driver, tow mode holds the od off even on flat land.
Here is a snapshot of the raw data Listor sent - the 1st few rows and the last few, with minimum and maximum values below that. I put the equivalent FORScan labels under that (my guess).
Don >> Can you check and see if these numbers match what you remember when viewing the CTS? You were pulling the trailer at 60-72mph in OD, with a downshift to 3rd at the end of it, yes?
I think what we are calling APP might be the TP column instead - not sure what that data is. The APP column has zeros in it. It would be good to know APP, IPR% or MFDES in order to know how much fuel is being asked for.
IAT seems high - is that sensor not near the air cleaner? If the engine is sucking in 160*F air, that would contribute to high EGT. Does not sound likely, though.
If we assume you did not have the pedal down more than 3/4 of the way or so (as the low ICP seems to indicate), it might be pointing to exhaust or boost leaks per FTN's suggestion.
No was not floored, I think you guys are right, i will have to investigate for exhaust leaks, i did do a boost leak weeks ago and only found a very small leak at the plenum, but i will go through the whole thing again!
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