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TTQS
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« Reply #15 on: August 25, 2011, 01:35:07 AM »
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Excellent discussion clearing up a few myths. Thanks for some great challenges guys.
Doug
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NOTORIOUS VR
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« Reply #16 on: August 25, 2011, 05:24:56 AM »
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OH MY GOD.
It's all good!  In either case remember to update your M-box XDF posted on here (I'm sure you already have). Great, so I'm glad that's solved... I was really scratching my head on that one for a while lol |
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judeisnotobscure
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« Reply #17 on: August 25, 2011, 04:59:36 PM »
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yeah, no worries. fixed my definition thanks.
I love this forum.
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I have a b5 s4
but i just want to dance.
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nyet
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« Reply #18 on: August 25, 2011, 09:44:35 PM »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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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Snow Trooper
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« Reply #19 on: August 27, 2011, 11:17:10 AM »
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so have we decided what the true stock injector flow rate is?
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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NOTORIOUS VR
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« Reply #20 on: August 28, 2011, 10:14:28 AM »
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so have we decided what the true stock injector flow rate is?
349cc @ 4 BAR seems to be correct or at least very close... but you cannot be certain working backwards from the bin. |
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Snow Trooper
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« Reply #21 on: August 29, 2011, 09:12:24 AM »
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I think they might be 319cc as if you do the math that meshes with the stock krkte value. 349cc = .09337
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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TTQS
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« Reply #22 on: September 07, 2011, 02:38:22 AM »
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I got 320 cc/min from KRKTE of 0.09778 and the funktionsrahmen expression so I thought I'd have a look at ELSAwin to get the actual figure but all I could find was a wide range of 270 to 330 cc/min. This is also a PITA because the test medium is gasoline from the fuel tank. So we would then have to correct this figure by the ratio of the density of n-heptane (0.6795 g/cc) to the gasoline in use. However, If we just use the 'petrol factor' of 1.05 in the funktionsrahmen which would result from a gasoline density of 0.7135 g/cc, (although I understand premium is nearer 0.75) this would give a Qstat range of 283.5 to 346.5 cc/min (n-heptane).
Not as helpful a conclusion as I had hoped :-(
Doug
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« Last Edit: September 12, 2011, 02:58:30 AM by TTQS »
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ABCD
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« Reply #23 on: July 18, 2012, 07:38:57 PM »
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I got 320 cc/min from KRKTE of 0.09778 and the funktionsrahmen expression so I thought I'd have a look at ELSAwin to get the actual figure but all I could find was a wide range of 270 to 330 cc/min. This is also a PITA because the test medium is gasoline from the fuel tank. So we would then have to correct this figure by the ratio of the density of n-heptane (0.6795 g/cc) to the gasoline in use. However, If we just use the 'petrol factor' of 1.05 in the funktionsrahmen which would result from a gasoline density of 0.7135 g/cc, (although I understand premium is nearer 0.75) this would give a Qstat range of 283.5 to 346.5 cc/min (n-heptane).
Not as helpful a conclusion as I had hoped :-(
Doug
So, that means across the globe we get fuel of varying density etc...so the calculations will vary a bit ...? |
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nyet
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« Reply #24 on: July 18, 2012, 08:31:18 PM »
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I've given up trying to find the right theoretical value for krkte and just tune it empirically
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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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RaraK
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« Reply #25 on: July 20, 2012, 05:35:13 PM »
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I've given up trying to find the right theoretical value for krkte and just tune it empirically
there you go. I gave up on a "formula" a LOOONG time ago. just never has worked for me.  I just do percent change, and then fine tune from there. Usually its within 6-7% on the 4 sets of injectors i had calibrated. Good enough starting point realistically. |
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dantt
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« Reply #26 on: September 26, 2013, 02:48:11 AM »
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hello guys,
I need your help.
I have a tt 225 with map and air filter
I would like to add a fuel pressure regulator from 3 bar (standard) to 4bar
I have not understand if I need to change only KRKTE or I need to change FRLFSDP too
thanks
Daniele
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« Last Edit: September 26, 2013, 02:49:48 AM by dantt »
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catbed
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« Reply #27 on: September 26, 2013, 04:01:08 AM »
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hello guys,
I need your help.
I have a tt 225 with map and air filter
I would like to add a fuel pressure regulator from 3 bar (standard) to 4bar
I have not understand if I need to change only KRKTE or I need to change FRLFSDP too
thanks
Daniele
KRKTE is what you need to change. |
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dantt
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« Reply #28 on: September 26, 2013, 07:18:13 AM »
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KRKTE is what you need to change.
thanks for your support ithink that 386cc @3bar whit new fuel pressur regolator @ 4bar became 445cc, isn't it? whit this calculator http://nefariousmotorsports.com/forum/index.php?;topic=4021.0 ( i' have tested it! it works fine whit oem value ) my new value is KRKTE = 0,073223304 do you think i need to modify KVB for fuel consumption ? thanks !!!! |
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catbed
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« Reply #29 on: September 26, 2013, 10:53:19 AM »
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thanks for your support ithink that 386cc @3bar whit new fuel pressur regolator @ 4bar became 445cc, isn't it? whit this calculator http://nefariousmotorsports.com/forum/index.php?;topic=4021.0 ( i' have tested it! it works fine whit oem value ) my new value is KRKTE = 0,073223304 do you think i need to modify KVB for fuel consumption ? thanks !!!! Yes, if you want dashboard display to be somewhat accurate. Multiply KVB by %change in KRKTE. |
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