1.8t timing retard

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Topic: 1.8t timing retard (Read 6700 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?


« Last Edit: May 22, 2016, 10:30:35 AM by vwaudiguy »	Logged

"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 »	Logged

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 »	Logged

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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