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Author Topic: 2000 A6 APB 2.94L RS6-R Build/Tune  (Read 87226 times)
prj
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« Reply #45 on: June 07, 2013, 11:41:02 PM »

Nye: feature request.
Make it so that you can choose which runs to overlay. Like if there's multiple runs, so you have checkboxes which runs you want to display.
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doug86
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« Reply #46 on: June 08, 2013, 07:29:27 AM »

Great build, I love the attention to detail. I might just have to start building a 2.7t of my own :p
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nyet
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« Reply #47 on: June 08, 2013, 08:44:22 AM »

Nye: feature request.
Make it so that you can choose which runs to overlay. Like if there's multiple runs, so you have checkboxes which runs you want to display.

Ya. I've wanted this feature for a long time too.

Added to my list of things to do

https://github.com/nyetwurk/ecuxplot/issues/15

I could use some help Smiley hint hint.

yes i know the code is a disaster area ...
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pablo53
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« Reply #48 on: June 08, 2013, 03:58:09 PM »

Seems I may have missed at least one detail - checked and swapped the FPR today.   Seeing THIS and the broken piece of plastic wedged in there gives me hope that I may have just found the fueling problem.

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pablo53
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« Reply #49 on: June 08, 2013, 04:32:21 PM »

Great build, I love the attention to detail. I might just have to start building a 2.7t of my own :p

Re-thinking your MR2 build?     Grin
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pablo53
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« Reply #50 on: June 09, 2013, 11:58:47 AM »

Log from last night attached along with the Zeitronix screenshot.   

Quick burst in second gear, off the pedal for a few seconds, then WOT from 3700 rpm in 3rd.   AFR drops to 11:1, peaks at 11.7 (where the white vertical line is at), and ends at 11.5 before lifting off.


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nyet
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« Reply #51 on: June 09, 2013, 09:28:59 PM »

That looks really solid!

Nice work.
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prj
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« Reply #52 on: June 10, 2013, 01:32:59 AM »

Does not look that good to me.
Injectors are 100%, request is 11.0, actual is 11.7.
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pablo53
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« Reply #53 on: June 10, 2013, 09:06:37 AM »

Unfortunately, there is still an underlying fueling problem at higher Boost/RPM, but at least now air/fuel ratios (and torque) are reacting reasonably to changes in compensation in the software.   

I'm still awaiting a fuel pressure sensor to confirm while looking into a new fuel pump set-up.  I would have preferred to use the Bosch 044, but I was told it would not fit in the A6 fuel tank.   



 
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prj
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« Reply #54 on: June 10, 2013, 09:37:51 AM »

Fits fine in the B5 fuel tank, but perhaps the C5 is different then.
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pablo53
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« Reply #55 on: June 12, 2013, 09:49:24 PM »

Just ordered the Walbro 450 lph pump.   Thanks for the suggestion guys.

For Sale: Deatschwerks 320 lph pump.... used for 3 months   Cheesy

Looks like the DW was doing fine up to ~ 430 whp, using 4 bar base pressure.   It just couldn't keep up much beyond without messing with the tune - which, now looking at their site, is what it's rated to without boosting the voltage.

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pablo53
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« Reply #56 on: June 16, 2013, 12:26:05 AM »

Walbro 416 arrived today so I spent some time re-working the tune some.  Fueling problem is solved.   Attached is the log of the last run this evening.

The blip around 5000 rpm is cam change-over.
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nyet
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« Reply #57 on: June 16, 2013, 03:28:46 AM »

req AFR is going pretty rich up top..
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prj
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« Reply #58 on: June 16, 2013, 06:23:13 AM »

The entire fueling looks like a huge mess.
There is IMO too much CF, and the timing is quite late - would be interesting to see the EGT, though if the turbo has a big hotside, they are probably fine.
Boost control probably needs tons of work, as what I am seeing from WGDC makes me think that you are actually running a MBC in parallel.

There is also no actual AFR in the log I believe?

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nyet
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« Reply #59 on: June 16, 2013, 10:47:16 AM »

timing is quite late

What do you mean by this? CFs are a bit high, but nothing to worry about. Just pull timing back a few clicks and its fine.

Quote
Boost control probably needs tons of work, as what I am seeing from WGDC makes me think that you are actually running a MBC in parallel.

I see nothing that suggests that.
« Last Edit: June 16, 2013, 10:49:44 AM by nyet » Logged

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
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