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Author Topic: Please help with log. only Boosting to 6 psi  (Read 13017 times)
mcskittle
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« on: June 29, 2020, 11:07:48 AM »

can someone more knowledgeable than me look at my log and tell me what is going on please?
Maybe I'm reading it wrong. Maybe its says its boosting to 18 but I'm requesting 29? Lol something isn't right, any help would be appreciated.
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dilly
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« Reply #1 on: June 29, 2020, 08:00:36 PM »

well this should explain it to you.
what have you changed hardware wise and what have you changed software wise

i can answer for everyone being you didnt post ecu number, engine hardware mods.... nobody is a genie, you want help but you have to help us too
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mcskittle
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« Reply #2 on: June 29, 2020, 10:10:58 PM »

2001 audi tt 225Q 8N0906018AT completely stock. I modified  ldxrn, ldxrnk, kmfirl, kmfiop, and kmfiop axis. I think it was in limp mode because it didn't pull like it used to. I had a lean code so i did a boost leak test and found 3 leaks, 2 under the intake and one on the firewall all on the brake booster lines, no engine lights, so I fixed the leaks and cleared the codes. Now it pulls hard but has a miss/cut around 3000-4000 rpm. Can't figure out whats going on. Installing a boost guage tomorrow and a new diverter valve.

P.S. when I look at it in ECUxPlot it doesn't show the same result it shows about 6 or 7 psi? Is the pic you posted my csv? because the file number up top doesn't match.

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_nameless
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« Reply #3 on: June 29, 2020, 10:17:51 PM »

So you turned up the boost but left fueling and timing stock? Youre going to end up with a hole in the side of your block after the engine folds up a rod from preset or melts a piston.
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Giving your mom a tuneup
mcskittle
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« Reply #4 on: June 29, 2020, 10:21:12 PM »

Don't want that haha. Thats why I was asking about the lamfa parameter in my files in another topic I started,
https://r.tapatalk.com/shareLink/topic?url=http%3A%2F%2Fnefariousmotorsports%2Ecom%2Fforum%2Findex%2Ephp%3Ftopic%3D18103%2E0&share_tid=18103&share_fid=64425&share_type=t&link_source=app.

 Because when I look at that table it doesn't make sense. I uploaded my files in that post for you fellow gents to look at.

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_nameless
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« Reply #5 on: June 29, 2020, 10:27:19 PM »

Don't want that haha. Thats why I was asking about the lamfa parameter in my files in another topic I started,
https://r.tapatalk.com/shareLink/topic?url=http%3A%2F%2Fnefariousmotorsports%2Ecom%2Fforum%2Findex%2Ephp%3Ftopic%3D18103%2E0&share_tid=18103&share_fid=64425&share_type=t&link_source=app.

 Because when I look at that table it doesn't make sense. I uploaded my files in that post for you fellow gents to look at.

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Odds are its not for your exact software version. Just because its the same ecu number doesnt make it the same theres different versions v1, 2, 3 etc. Some maps are not exactly in the same location. That or the map pack has errors
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mcskittle
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« Reply #6 on: June 29, 2020, 10:28:36 PM »

How do i figure out which one is the problem lol

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mcskittle
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« Reply #7 on: June 29, 2020, 10:32:12 PM »

Is it possible to flash a different/better defined bin?

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adam-
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« Reply #8 on: June 29, 2020, 11:36:08 PM »

Post your ori and edit.
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Auriaka
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« Reply #9 on: June 29, 2020, 11:37:44 PM »

In most cases yes, If yours is a wideband ecu I would suggest finding the file for the CB TT file thats on here.. TTQS posted it.

I would also emplore you to find the translated modules of the FR as text documents on here and review those. It will help you establish and understand some basic relationships of certain parameters that you are adjusting and WHY you are adjusting them, overall why they do what they do.

They can be confusing at first to understand, but read them, read them again, think about it, then read them again. If it helps to draw a web and "net" it to see the relationships and how it progresses...thats a great step.
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mcskittle
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« Reply #10 on: June 30, 2020, 07:38:42 AM »

The cb file is 1024kb and mine is 512kb?

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Auriaka
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« Reply #11 on: June 30, 2020, 07:53:17 AM »

If yours is 512 then your gonna have to find a defined 512. I dont know of any off the top of my head. I have been lucky enough everything has been 1024k
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mcskittle
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« Reply #12 on: June 30, 2020, 07:54:06 AM »

Okay i will keep looking. Thanks

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mcskittle
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« Reply #13 on: June 30, 2020, 09:23:45 PM »

I'm really thinking its fuel. What are the parameter names that i need to log fuel

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Auriaka
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« Reply #14 on: June 30, 2020, 10:21:49 PM »

https://s4wiki.com/wiki/Tuning#Open_loop_AFR

Good starting point would be going into visual logger and searching "lam" and seeing what parameters it comes up with. If you read the link above (suggested to read whole thing) it will give you key words to look out for and will help peace together whats going on and why.

A lot of time was put into assembling that page by a lot of senior members here and it literally can help you through most of the basic stuff to at least get you on your feet.
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