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1.8t timing retard
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Topic: 1.8t timing retard (Read 6704 times)
OTO
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1.8t timing retard
« on: May 22, 2016, 01:48:38 AM »
Hi
Car is audi a4 1.8tq 2002 me7.5 8e0909518m.
Stock turbo died and i replaced it with saab aero td04hl-15t. Injectors are ev14 550cc and i use e85.
Problem is random timing retard +4500rpm. it doesn't happen every wot pull and this is only time that i get it on log.
What causes it?
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vwaudiguy
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Re: 1.8t timing retard
« Reply #1 on: May 22, 2016, 10:01:43 AM »
Are these random runs that have the pull always made in the same way? For instance after the engine has had a chance to cool down, or recover?
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Last Edit: May 22, 2016, 10:30:35 AM by vwaudiguy
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
OTO
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Re: 1.8t timing retard
« Reply #2 on: May 23, 2016, 01:46:57 AM »
Usualy 3 rd gear and first wot pull after steady driving.
I just noticed that it does it also other gears but lot smoother so it won't feel so bad.
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Antsu_FI
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I hope that ME7.5 would be an open system :)
Re: 1.8t timing retard
« Reply #3 on: January 12, 2017, 12:35:38 PM »
If you adjust the ME7.5 ECU with a Lemmiwinks or UniSettings software, it does not work well.
Do not use it! This program is designed for ME7.1.
«
Last Edit: January 12, 2017, 12:38:22 PM by Antsu_FI
»
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KasperH
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Re: 1.8t timing retard
« Reply #4 on: January 12, 2017, 02:13:58 PM »
to me it looks like level 1 torque intervention, the ecu tries to get boost back down by retarding the timing because you've got massive overshoot @2700 RPM
«
Last Edit: January 12, 2017, 02:16:56 PM by KasperH
»
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mahjohng
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Re: 1.8t timing retard
« Reply #5 on: January 14, 2017, 06:59:10 PM »
Yep, look at that actual boost spiking vs. desired. Looks like its struggling to control the turbo. What wastegate are you using on saab turbo?
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