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Author Topic: About maf ID's and MLHFM  (Read 9374 times)
professor
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« on: May 03, 2012, 12:26:24 PM »
A friend's conflict made me open this thread!

Original 032RP (63mm Internal Diameter maf case) MLHFM is 1x512 with values:
Code:
161.6	162.1	162.7	163.3	163.8	164.4	164.9	165.4	166	166.5	167	167.6	168.1	168.6	169.1	169.6	170.1	170.6	171.1	171.6	172.1	172.5	173	173.5	173.9	174.4	174.9	175.3	175.7	176.2	176.6	177.1	177.5	177.9	178.3	178.7	179.2	179.6	180	180.4	180.7	181.1	181.5	181.9	182.3	182.6	183	183.4	183.7	184.1	184.4	184.8	185.1	185.4	185.8	186.1	186.4	186.7	187.1	187.4	187.7	188	188.3	188.6	188.9	189.2	189.5	189.7	190	190.3	190.6	190.8	191.1	191.4	191.7	191.9	192.2	192.5	192.7	193	193.3	193.5	193.8	194.1	194.3	194.6	194.9	195.2	195.5	195.8	196.1	196.4	196.7	197	197.3	197.7	198	198.3	198.6	199	199.3	199.7	200	200.3	200.6	200.9	201.2	201.6	201.9	202.2	202.5	202.8	203.1	203.4	203.7	204.1	204.4	204.7	205	205.3	205.6	205.9	206.2	206.5	206.8	207	207.3	207.6	207.8	208.1	208.3	208.6	208.9	209.2	209.4	209.7	210	210.3	210.5	210.8	211.1	211.4	211.7	212	212.3	212.6	212.9	213.3	213.6	213.9	214.2	214.6	214.9	215.2	215.6	215.9	216.3	216.6	217	217.4	217.7	218.1	218.5	218.9	219.2	219.6	220	220.4	220.8	221.2	221.7	222.1	222.5	222.9	223.4	223.8	224.2	224.7	225.1	225.6	226.1	226.5	227	227.5	227.9	228.4	228.9	229.4	229.9	230.4	230.9	231.4	231.9	232.4	232.9	233.4	233.9	234.4	234.9	235.4	235.9	236.5	237	237.5	238.1	238.6	239.1	239.7	240.2	240.8	241.4	241.9	242.5	243	243.6	244.2	244.7	245.4	246	246.6	247.2	247.9	248.5	249.2	249.9	250.5	251.2	251.9	252.6	253.3	254	254.7	255.4	256.2	256.9	257.6	258.4	259.2	259.9	260.7	261.5	262.3	263.1	263.9	264.7	265.5	266.4	267.2	268	268.9	269.7	270.6	271.5	272.4	273.3	274.2	275.1	276	276.9	277.8	278.8	279.7	280.7	281.6	282.6	283.6	284.6	285.6	286.6	287.6	288.6	289.6	290.6	291.7	292.7	293.8	294.9	296	297	298.1	299.2	300.4	301.5	302.6	303.7	304.9	306	307.2	308.4	309.5	310.7	311.9	313.1	314.3	315.5	316.7	317.9	319.1	320.4	321.7	322.9	324.2	325.5	326.9	328.2	329.5	330.9	332.2	333.6	335	336.4	337.8	339.2	340.7	342.1	343.6	345.1	346.6	348.1	349.7	351.2	352.8	354.4	356	357.6	359.2	360.8	362.5	364.1	365.8	367.5	369.2	370.9	372.7	374.4	376.2	377.9	379.7	381.5	383.3	385.2	387	388.9	390.8	392.6	394.6	396.5	398.4	400.4	402.3	404.3	406.3	408.3	410.4	412.4	414.5	416.5	418.6	420.7	422.9	425	427.2	429.4	431.6	433.8	436	438.3	440.6	442.9	445.2	447.5	449.8	452.2	454.6	457	459.5	461.9	464.4	466.9	469.4	471.9	474.5	477	479.6	482.2	484.8	487.5	490.1	492.8	495.5	498.2	500.9	503.7	506.4	509.2	512	514.9	517.7	520.6	523.5	526.4	529.4	532.3	535.3	538.3	541.4	544.4	547.5	550.5	553.6	556.7	559.9	563	566.2	569.4	572.6	575.9	579.2	582.5	585.8	589.2	592.6	596	599.5	602.9	606.4	609.8	613.3	616.8	620.4	623.9	627.5	631.1	634.7	638.3	642	645.7	649.5	653.3	657.1	661	664.8	668.8	672.7	676.7	680.7	684.7	688.7	692.8	696.9	701	705.2	709.3	713.6	717.8	722	726.3	730.7	735	739.4	743.8	748.2	752.7	757.1	761.6	766.2	770.7	775.3	780	784.6	789.3	794	798.7	803.5	808.3	813.1	817.9	822.8	827.7	832.6	837.6	842.5	847.5	852.5	857.6	862.7	867.8	872.9	878	883.2	888.4	893.6	898.9	904.2	909.5	914.8	920.2	925.6	931.1	936.7	942.2	947.8	953.4	959.1	964.8	970.5	976.3	982.1	987.9	993.8	999.7	1005.6

Lets change MAF case size from 63mm ID to 76mm ID.
After some time my new MLHFM values were calculated.
But he is sure that using his values MLHFM will work better!

Whats your opinion? values are attached on .xlsx.
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nyet
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« Reply #1 on: May 03, 2012, 01:22:03 PM »
Please give more useful background information. I'm not going to waste type graphing these or running them through matlab to try to guess the intention of either of the scaling

Are these a fixed % scaling based on area or diameter?

Some thing else?
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Lobuziak
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« Reply #2 on: May 03, 2012, 01:40:25 PM »
I made a graph with 46% scale... used offset = 200
Code:
143,9	144,7	145,5	146,4	147,1	148,0	148,8	149,5	150,4	151,1	151,8	152,7	153,4	154,2	154,9	155,6	156,3	157,1	157,8	158,5	159,3	159,9	160,6	161,3	161,9	162,6	163,4	163,9	164,5	165,3	165,8	166,6	167,2	167,7	168,3	168,9	169,6	170,2	170,8	171,4	171,8	172,4	173,0	173,6	174,2	174,6	175,2	175,8	176,2	176,8	177,2	177,8	178,2	178,7	179,3	179,7	180,1	180,6	181,2	181,6	182,0	182,5	182,9	183,4	183,8	184,2	184,7	185,0	185,4	185,8	186,3	186,6	187,0	187,4	187,9	188,2	188,6	189,1	189,3	189,8	190,2	190,5	190,9	191,4	191,7	192,1	192,6	193,0	193,4	193,9	194,3	194,7	195,2	195,6	196,1	196,6	197,1	197,5	198,0	198,5	199,0	199,6	200,0	200,4	200,9	201,3	201,8	202,3	202,8	203,2	203,7	204,1	204,5	205,0	205,4	206,0	206,4	206,9	207,3	207,7	208,2	208,6	209,1	209,5	209,9	210,2	210,7	211,1	211,4	211,8	212,1	212,6	213,0	213,4	213,7	214,2	214,6	215,0	215,3	215,8	216,2	216,6	217,1	217,5	218,0	218,4	218,8	219,4	219,9	220,3	220,7	221,3	221,8	222,2	222,8	223,2	223,8	224,2	224,8	225,4	225,8	226,4	227,0	227,6	228,0	228,6	229,2	229,8	230,4	231,0	231,7	232,3	232,9	233,4	234,2	234,7	235,3	236,1	236,6	237,4	238,1	238,7	239,4	240,2	240,7	241,5	242,2	242,9	243,7	244,4	245,1	245,8	246,6	247,3	248,0	248,8	249,5	250,2	251,0	251,7	252,4	253,3	254,0	254,8	255,6	256,4	257,1	258,0	258,7	259,6	260,4	261,2	262,1	262,8	263,7	264,5	265,3	266,3	267,2	268,0	268,9	269,9	270,8	271,8	272,9	273,7	274,8	275,8	276,8	277,8	278,8	279,9	280,9	282,1	283,1	284,1	285,3	286,4	287,5	288,6	289,8	291,0	292,1	293,3	294,5	295,6	296,9	298,1	299,3	300,6	301,8	303,1	304,4	305,7	307,0	308,3	309,6	311,0	312,3	313,6	315,0	316,4	317,8	319,1	320,6	322,1	323,5	325,0	326,4	327,9	329,4	330,8	332,3	333,9	335,3	336,9	338,6	340,2	341,6	343,2	344,8	346,6	348,2	349,8	351,4	353,2	354,8	356,5	358,3	359,9	361,6	363,4	365,1	366,9	368,6	370,4	372,1	373,9	375,8	377,7	379,4	381,3	383,2	385,3	387,2	389,1	391,1	393,0	395,1	397,1	399,1	401,2	403,2	405,4	407,5	409,7	411,8	414,0	416,2	418,6	420,8	423,1	425,4	427,8	430,1	432,4	434,8	437,3	439,6	442,1	444,6	447,0	449,5	452,1	454,6	457,3	459,7	462,4	465,0	467,6	470,4	473,0	475,8	478,6	481,2	484,1	486,9	489,7	492,6	495,4	498,3	501,2	504,1	507,2	510,1	513,2	516,1	519,2	522,2	525,4	528,5	531,7	534,9	538,1	541,3	544,6	547,9	551,3	554,6	558,0	561,4	564,7	568,2	571,7	575,2	578,9	582,4	586,0	589,7	593,3	597,0	600,8	604,4	608,2	612,0	615,8	619,8	623,5	627,5	631,4	635,4	639,3	643,4	647,3	651,4	655,5	659,8	663,8	668,1	672,3	676,5	680,9	685,2	689,5	693,9	698,4	702,8	707,4	711,7	716,3	720,8	725,5	730,0	734,7	739,3	744,0	748,8	753,6	758,5	763,3	768,2	773,2	778,2	783,3	788,2	793,3	798,3	803,4	808,5	813,8	818,9	824,2	829,4	834,7	839,9	845,3	850,7	856,3	861,8	867,4	873,1	878,6	884,4	890,1	896,0	901,8	907,7	913,5	919,5	925,5	931,5	937,6	943,6	949,9	956,0	962,1	968,4	974,8	981,1	987,5	993,9	1000,4	1006,9	1013,4	1019,9	1026,7	1033,2	1039,9	1046,8	1053,5	1060,4	1067,2	1074,1	1081,1	1088,1	1095,1	1102,1	1109,3	1116,4	1123,6	1130,9	1138,1	1145,4	1152,7	1160,1	1167,5	1175,0	1182,4	1189,9	1197,5	1205,1	1212,7	1220,4	1228,1	1235,9	1243,6	1251,5	1259,4	1267,4	1275,6	1283,6	1291,8	1300,0	1308,3	1316,6	1324,9	1333,4	1341,9	1350,3	1358,9	1367,6	1376,2
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professor
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« Reply #3 on: May 03, 2012, 01:46:13 PM »
@nyet:
The easy way is to upscale by a fixed percentage all values, where percentage is the area difference of new maf case / old maf case.
Will work but its the cheap way.

The better way for me is to upscale values of course according to area% difference but also according to engine load (== mass flow/RPM). Dont forget air flow increase (or volymetric flow if you prefer) of the sensor readings are not linear.

@Lobuziak
Something is wrong with the graph please correct it is very useful (low values of original and mine starting from 129 and friends from 0. also pls switch friend <-> mine)). Matlab i guess?
« Last Edit: May 03, 2012, 01:58:22 PM by professor » Logged
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« Reply #4 on: May 03, 2012, 02:06:41 PM »
My mistake  Cheesy I switched names. It's done in LibreOffice Calc. The graph is without offset.
« Last Edit: May 03, 2012, 02:09:10 PM by Lobuziak » Logged
professor
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« Reply #5 on: May 03, 2012, 03:02:04 PM »
A bit reformatted.

I think its clear that mine is better  Grin
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nyet
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« Reply #6 on: May 03, 2012, 03:16:59 PM »
Only two ways to find out

1) get it flowbenched
2) test it for real with a wb Smiley
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ME7.1 tuning guide
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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
professor
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« Reply #7 on: May 03, 2012, 04:33:56 PM »
I' ll do it asap  Smiley

But its obvious  Cheesy
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s5fourdoor
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« Reply #8 on: May 03, 2012, 04:46:23 PM »
start with a maf sensor and housing that are pre-calibrated.  you'll regret it otherwise...  that's been my experience at least.
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professor
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« Reply #9 on: May 04, 2012, 08:37:20 AM »
News:

After some matlab calibrations on MLHFM values:
First start and around 40km of driving, ltft's are 0.2, stft's 3.0!!
2 clicks KRTKE higher and we re done!

Car feels and sounds angrier. Should had done this upgrade before.
« Last Edit: May 04, 2012, 11:13:52 AM by professor » Logged
Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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« Reply #10 on: July 22, 2012, 08:26:34 AM »
Found a very useful work of audizine member slappy_dunbar that should be available.
Original link
Post link
File is also attached.
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« Reply #11 on: July 24, 2012, 09:52:50 AM »
Quote from: professor on July 22, 2012, 08:26:34 AM
Found a very useful work of audizine member slappy_dunbar that should be available.
Original link
Post link
File is also attached.

im pretty sure Chris "bananas" made those sheets also
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