Wtf
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« on: June 07, 2019, 10:48:32 AM »
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Hi i have knock problem on 1.8t AJQ swapped golf 2 stock ecu map
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_nameless
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« Reply #1 on: June 07, 2019, 11:51:43 AM »
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Hi i have knock problem on 1.8t AJQ swapped golf 2 stock ecu map
Looks like a fuel supply issue not knock |
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If you are in the market for a tune and would like the ease of downloading and flashing a dyno tested tune for a fair price check out https://instatune.sellfy.store/ |
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nyet
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« Reply #2 on: June 07, 2019, 01:09:17 PM »
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"WTF" is certainly apt.
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Wtf
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« Reply #3 on: June 07, 2019, 01:23:31 PM »
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What do you mean? Apt? At 5,7krpm ECU detects knock on 3 and somtimes on 2 cylinder. Intercooler and piping are larger by lenght and diesel ic maybe is problem
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« Last Edit: June 07, 2019, 01:55:57 PM by Wtf »
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Blazius
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« Reply #4 on: June 07, 2019, 02:40:59 PM »
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What do you mean? Apt? At 5,7krpm ECU detects knock on 3 and somtimes on 2 cylinder. Intercooler and piping are larger by lenght and diesel ic maybe is problem
.................................. apt as in certainly fitting.. You have 14.7 desired AFR from 5k upwards... ofcourse you got knock. So that means your ecu is not stock or something because even by default if you are WOT u got constant afr rich demand on most 1.8/ts atleast. |
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« Last Edit: June 07, 2019, 03:29:04 PM by Blazius »
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Wtf
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« Reply #5 on: June 07, 2019, 02:52:00 PM »
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Same issue with stock bin from forum. Btw. its narrow band o2 sensor
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« Last Edit: June 07, 2019, 02:53:36 PM by Wtf »
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nyet
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« Reply #6 on: June 07, 2019, 03:08:31 PM »
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Its only 3 deg and only on cyl3.
stock ECUs can often show knock retard. Varies depending on IATs and fuel quality.
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Blazius
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« Reply #7 on: June 07, 2019, 03:28:02 PM »
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Its only 3 deg and only on cyl3.
stock ECUs can often show knock retard. Varies depending on IATs and fuel quality.
also Cylinder 3 is always higher in knock voltage because of casting of the block,but I am sure its common knowledge at this point. |
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Wtf
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« Reply #8 on: June 07, 2019, 03:53:00 PM »
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Ok i understand but why on 3 cylinder? Tomorrow i'd check fuel pressure on the run . I do similar project with ary engine running without problem. Pump can pressure 6 bar with gauge on the fuel supply
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« Last Edit: June 07, 2019, 03:55:42 PM by Wtf »
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Wtf
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« Reply #9 on: June 07, 2019, 04:03:27 PM »
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Sometimes is hard to describe answers to you guys because i'm from eastern eu. Tomorrow i will check this on run with 98ron gasoline.  |
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« Last Edit: June 07, 2019, 04:09:27 PM by Wtf »
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nyet
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« Reply #10 on: June 07, 2019, 04:11:29 PM »
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Also get a wideband and make sure you aren't running lean at high load.
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Blazius
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« Reply #11 on: June 07, 2019, 04:13:01 PM »
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As I said, cylinder 3 is always higher / first to knock because of the water jacket casting, next one is cylinder 2 and 1,4 should be the same roughly. Are you from Romania by any chance ?
Also log o2 voltage, so as nyet said you dont run lean on wot, specially with NB.
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Wtf
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« Reply #12 on: June 07, 2019, 04:28:57 PM »
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From Poland. Running on 95ron now but i dont notice this problem on ary engine because is wery confiusing me on ajq right now. So tell me its problem about plumbing and about fuel delivery. Because at this point i'm dumb like donkey  |
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« Last Edit: June 07, 2019, 04:31:18 PM by Wtf »
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nyet
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« Reply #13 on: June 07, 2019, 04:31:28 PM »
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You'll never tell from narrowband.
Get a wideband or try a fresh tank of gas.
We are going in circles.
Or this file tends to run leaner than the file you replaced.
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Wtf
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« Reply #14 on: June 07, 2019, 04:39:24 PM »
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I don't tell its narrow because its oem from factory btw engine code. I'm go to factory bhp by now.
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