Khendal
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« on: April 28, 2018, 09:04:13 AM »
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Hello, i have a question for you  Car fully tuned, with GTX3071 Gen2, at 2.3-2.4bar ... was going perfectly...till turbo broke. Changed the turbo with a GTX3076 Gen2 ...now the car with the same ECU as before, also at lesser pressure... have the EGT raised...for example in a pull from 3-4-5 ... EGT till 960-980. The car has meth + 100. Logs are perfect but i don't understand what could be the problem for high egt. Any suggest? |
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sonique
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« Reply #1 on: April 28, 2018, 01:41:01 PM »
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Emap bigger
egt higher
or to low ignition
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grey
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« Reply #2 on: April 28, 2018, 01:47:06 PM »
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the first thing coming to mind is low ignition.Did you check it ?
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Khendal
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« Reply #3 on: April 28, 2018, 02:02:31 PM »
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Do you think i need to increase ignition timing? KFZW and KFZW2 in this case?
How can i check if it's still low? Only trying aggressive ignition timing?
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brs
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« Reply #4 on: April 28, 2018, 02:08:32 PM »
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Do you think i need to increase ignition timing? KFZW and KFZW2 in this case?
How can i check if it's still low? Only trying aggressive ignition timing?
Yes,have you a log ? |
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Khendal
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« Reply #5 on: April 28, 2018, 02:20:53 PM »
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Yes this is one...
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nubcake
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« Reply #6 on: April 28, 2018, 02:36:37 PM »
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Are we talking actual EGT? Measured where and how?
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« Last Edit: April 28, 2018, 02:38:49 PM by nubcake »
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Khendal
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« Reply #7 on: April 28, 2018, 02:42:33 PM »
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Are we talking actual EGT? Measured where and how?
With probe at the Exhaust manifold... not downpipe. After a pull 3-4-5 960-970 and higher if continue in wot...and 946 at 1.9bar... |
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sonique
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« Reply #8 on: April 28, 2018, 02:52:52 PM »
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same turbine side and bigger compressor side
i think emap the problem
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nubcake
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« Reply #9 on: April 28, 2018, 04:30:47 PM »
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How's IAT looking?
Verified WMI operational?
Tried making the request a tad richer? If yes - how do temps look then?
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« Last Edit: April 28, 2018, 04:36:04 PM by nubcake »
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turbojohan
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« Reply #10 on: April 29, 2018, 01:42:06 AM »
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Probably more EMP for same boost.
More burnt mixture stays in cilinder.
Maybe valvesprings bit weak for this EMP.
Measure EMP can help you.
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Khendal
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« Reply #11 on: April 29, 2018, 03:25:49 AM »
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same turbine side and bigger compressor side
i think emap the problem
All exhaust system is 76mm at the moment... he will upgrage to 80mm or 90mm asap. |
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Khendal
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« Reply #12 on: April 29, 2018, 03:39:55 AM »
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How's IAT looking?
Verified WMI operational?
Tried making the request a tad richer? If yes - how do temps look then?
- IAT is around 10°-17° more degrees of ambient temperature...for example this night was 14° outside, the highest temperature was 31° IAT after a pull in 4-5-6... It's good. - Yes WMI is ok - Yes i've tried to enrich the request now is over 7500rpm 0.78-0.79 |
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Khendal
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« Reply #13 on: April 29, 2018, 03:44:54 AM »
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Yesterday night i' ve tried to advance ignition timing of 1°-1,5° over 6000rpm, i've tried a different phases and a richer mixture over 7000. The car seems to go better...and i think i can try to advance more KW to see if really the EGT are going better. This is a pull of 4-5-6 till 290 Km/h ... we have notice the increase of EGT while we try to finish the 5th gear....from 7000rpm to 7500rpm and then after changing gear they come back to a reasonable value. Take a look. P.s. there's a mistake in rail pressure...i don't know why at the moment it's only 165 and not more 175 like a request... maybe the LPFP is passing away  |
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teobolo
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« Reply #14 on: April 29, 2018, 11:56:59 AM »
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try add some more timing especially above 6000rpm and your egt will go even lower .
Nice clean logs !
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