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Author Topic: 1.8T TT AJQ swapped AUM  (Read 4248 times)
krashot
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« on: September 16, 2020, 04:29:48 AM »

Hey guys,

Heres the thing and the issue I got.

My car originally had AJQ dbw engine with 1 o2 sensor. Before I bought the car, 4 years ago - engine swap has been done from previous owner. They put AUM engine with the narrowband loom from the AJQ...and AUM wideband ECU ME 7.5.

I just got a PCM Relay error and lambda s1b1.......Car is using lots of fuel and doesn't run properly...It has 0.9bar boost but it lacks lots of power....
So, do I need to Wire Wideband o2 sensor OR I can use Narrowband ECU with existing wiring and nothing to change and just to run my engine as narrowband? Is that possible?

Can anyone help?

Thanks!
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krashot
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« Reply #1 on: September 16, 2020, 04:31:01 AM »

P.S I was given an advice from a tuner to make me a custom map Alpha N to run without 2 lamdas?
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Blazius
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« Reply #2 on: September 16, 2020, 05:36:36 AM »

Alpha n is a backup mode if everything fails. Tune the car properly and fix the harness / sensors if needed.
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krashot
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« Reply #3 on: September 16, 2020, 05:37:57 AM »

Can I swap to an Narrowband ECU?
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nyet
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« Reply #4 on: September 17, 2020, 08:41:40 PM »

P.S I was given an advice from a tuner to make me a custom map Alpha N to run without 2 lamdas?

Run.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
krashot
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« Reply #5 on: September 18, 2020, 08:35:50 AM »

Run.

What you mean?
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dal
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« Reply #6 on: September 18, 2020, 10:23:53 AM »

Run.

Best advise
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nyet
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« Reply #7 on: September 18, 2020, 11:30:22 AM »

What you mean?

"P.S I was given an advice from a tuner to make me a custom map Alpha N to run without 2 lamdas?"
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
krashot
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« Reply #8 on: September 22, 2020, 11:27:28 AM »

Thats why I wrote at the end a "?" ....like wtf? So I decided to write a post to get some help regarding my issue.
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krashot
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« Reply #9 on: September 28, 2020, 07:41:01 AM »

Ok so heres what I did! Smiley

My AUM ECU and 1.8T AUM Engine had an AJQ Loom. So I have opened the ecu connector and wired PIN 71 and PIN 52. As I already have the existing pins for the Narrowband o2 5,70 and 51 which I need for the wideband. I will remove the 4 pin connector replace it with the 6 pin(which I got) Is everything correct?

Thanks
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krashot
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« Reply #10 on: October 04, 2020, 05:11:24 PM »

Anyone?
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krashot
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« Reply #11 on: October 22, 2020, 03:45:13 PM »

Okay, so I have sorted my issue, wired 2 new wires and got a new 6 pin connector for the Wideband, and car is running as it should again! You can lock it now.
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