What's your MAF ?

[4everRS]

Below is a partial log of block 2 for my car. As you can see, bank1 is always behind bank2. I was wondering what others show for this? Is there something wrong with my car?

Also, what's that crank hp estimator again. Do I take the sum and divide by .75 ? If that's the case, my peak is about 550 ? I'm on the APR 100 setting.

RPM	Bank1	Bank2
5000	173.28	190.47
5080	168.39	190.47
5120	175.36	192.08
5200	179.14	195.25
5240	177.31	192.39
5280	179.97	196.86
5360	184.61	195.83
5400	182.31	194.06
5440	186.61	201.75
5520	184.61	197.06
5600	187.33	197.06
5640	189.28	197.83
5680	184.44	195.44
5720	187.75	203.58
5760	190.28	198.67
5840	189.67	201.5
5880	192.64	200.28
5920	193.83	204
5960	194.72	201.92
6000	194.56	207
6040	198.28	206.75
6120	198	205.08
6160	196.42	206.75
6240	198.47	208.42
6240	200.33	211.53
6280	198.72	206.75
6360	199.5	208.42
6360	201.97	206.75
6440	199.42	208.42
6520	198.25	206.75
6560	200.11	213.53
6520	198.72	206.5
5840	200.28	206.5
5200	198.47	210.86
4720	188.92	203.58
4600	165.28	190.67

[SzymekCRX]

RPM	Temperature	Lambda	Lambda		RPM	Load	Mass Flow	Mass Flow
				TIME
/min	°C	%	%	STAMP	/min	%	g/s	g/s
4760	88	0	0	513,19	4800	137,6	146,03	132,03
4920	87	0	0	513,74	5000	133,8	148,94	157,44
5120	87	0	0	514,3	5200	140,6	164,36	170,25
5320	87	0	0	514,83	5400	142,1	173,53	172,25
5520	87	0	0	515,39	5600	140,6	176,11	182,89
5720	87	0	0	515,93	5760	140,6	183,56	189,11
5920	88	0	0	516,48	5960	142,9	186,42	196,81
6080	87	0	0	517,03	6160	143,6	196,86	199,28
6280	88	0	0	517,58	6360	140,6	199,64	203,39
6480	88	0	0	518,14	6560	136,1	202,19	201,75

[4everRS]

Szymek, can you get a 3rd gear pull? Looks like yours runs slightly less in bank 1 also, but the numbers are closer together than mine. 404 peak seems strong for a stock car. Looks like a bigger difference in lower rpms though.

[SzymekCRX]

I'll do it next week. Npow have to run to the dealer for an alignment procedure after I finished my suspension replacement job

[skyegtb]

This was the end of a 3rd gear WOT run from 1500rpm to 6400rpm. Bank 1 was always lower. I am thinking of swapping the MAFs around to see if the low value follows with the same MAF.

Engine Speed	Mass Air Flow	Mass Air Flow
(G28)	(G70) Bank 1	(G246) Bank 2
/min	g/s	g/s
5000	209.17	231.36
5040	204.53	229.53
5080	208.42	238.86
5120	207.67	236.75
5160	212.44	227.72
5200	210.67	235.92
5280	211.81	234.89
5280	207.81	238.86
5320	210.53	235.11
5360	205.92	238.14
5400	211.36	233
5440	207.81	239.33
5480	213.53	227.72
5520	208.58	238.17
5520	209.19	238.08
5560	209	233.61
5640	214.31	237.11
5640	211.31	233.42
5680	209.83	231.53
5720	212.39	240.92
5760	214.28	235.25
5800	213	235.25
5800	212.17	237.11
5880	206.69	240.44
5880	209.83	236.64
5920	214.14	239.03
5960	211.5	242.83
6000	213.75	242.69
6000	211.56	240.78
6080	215.97	236.97
6080	216.08	242.69
6120	213.28	240.78
6160	216.69	236.97
6200	209.86	238.86
6240	220.5	242.69

[4everRS]

Wow, great numbers Sky - totals that is. Lmk what happens if you swap them. I want to try that too.

What tune do you have?

[marklar182]

One bank will always be lower due to the intake tract geometry

[4everRS]

One bank will always be lower due to the intake tract geometry

Good point. Now, how much should they be off?

Also, after seeing some of the numbers from others, I am wondering if there is something amiss with my tune.

Please post 5k rpm to redline in block 2 turbo mode if possible. I would love to see what some other tunes are doing!

[skyegtb]

Wow, great numbers Sky - totals that is. Lmk what happens if you swap them. I want to try that too.

What tune do you have?

My car has the full MTM Stage 4 568bhp tune, uprated turbos etc. If I get the change next week I will try to swap the MAF's around and do another logged run.

[hahnmgh63]

And remember that even though the air goes through separate MAF's, Turbos, then Intercoolers, it still meets in the same intake manifold before entering the cylinders to keep everything balanced so one side of the V isn't working harder than the other.

[Brav]

with a slight boost leak, i think.. but wide variance none the less. stock tune.

Group A:	'002				Group B:	'031				Group C:	'115
	RPM	Load	MAF	MAF		Lamda	Lamda	Lamda	Lamda		RPM	LOAD	Boost	Boost
TIME	(G28)		(G70) B1	(G246) B2	TIME	B1 (actual)	B1 (specified)	B2 (actual)	B2 (specified)	TIME	(G28)		(specified)	(actual)
STAMP	/min	%	g/s	g/s	STAMP	V	V	V	V	STAMP	/min	%	mbar	mbar
181.13	3160	109.8	72	83.67	180.79	0.78	0.79	0.8	0.785	180.96	3080	109	1450	1450
181.65	3480	111.3	86.33	92.19	181.3	0.78	0.795	0.81	0.785	181.47	3360	110.5	1470	1460
182.16	3880	118	98.56	107.5	181.82	0.785	0.785	0.81	0.785	181.99	3720	115	1490	1480
182.67	4240	119.5	108.14	119.69	182.33	0.79	0.8	0.815	0.79	182.5	4120	119.5	1490	1490
183.19	4600	120.3	120.67	131.06	182.85	0.795	0.8	0.805	0.785	183.02	4480	118.8	1540	1490
183.71	4960	125.6	136.11	145.64	183.36	0.78	0.78	0.79	0.775	183.53	4840	124.8	1550	1520
184.22	5320	127.1	144.56	158.39	183.88	0.785	0.785	0.805	0.79	184.05	5200	127.1	1570	1540
184.74	5720	127.8	157.56	176.28	184.4	0.79	0.8	0.815	0.8	184.56	5560	127.8	1610	1540
185.25	6080	129.3	170.97	188.5	184.91	0.79	0.8	0.815	0.8	185.08	5960	128.6	1610	1580
185.77	6320	128.6	178.14	193.67	185.42	0.785	0.8	0.81	0.8	185.59	6280	128.6	1610	1620
186.28	4600	129.3	117.11	134.53	185.94	0.79	0.8	0.815	0.81	186.11	4920	138.3	1570	1710
186.8	4680	111.3	115.58	123.47	186.45	0.795	0.8	0.805	0.805	186.62	4640	113.5	1580	1500

[4everRS]

Thanks for the input guys. Keep the logs coming everyone.

Brav, that looks like mine, just lower due to stock tune. As Mark and Mark said, one side will just likely flow more than the other. Just want to make sure it's not due to a turbo issue.

That MTM kit has some pretty awesome numbers. 50 g/s more than mine!

Szymek, are you sure your not tuned? What does your block 115 show?

[V8weight]

Kyle, bank 1 will always be lower due to not only intake geometry, but also due to data collection speeds....bank 1 is collected first, then bank 2 while logging, bank 2 gets about a 1/20 second jump on bank 1.

[JSRS6]

Hey, its Pat! Happy thanksgiving man. You about ready to drop an RS6 motor in that all road? Stephen has a spare setup...

[SzymekCRX]

Thanks for the input guys. Keep the logs coming everyone.

Brav, that looks like mine, just lower due to stock tune. As Mark and Mark said, one side will just likely flow more than the other. Just want to make sure it's not due to a turbo issue.

That MTM kit has some pretty awesome numbers. 50 g/s more than mine!

Szymek, are you sure your not tuned? What does your block 115 show?

Sure I'm not tuned

RPM	Temperature	Lambda	Lambda		RPM	Load	Mass Flow	Mass Flow		RPM	Load	Absolute Pres,	Absolute Pres,
				TIME					TIME
/min	°C	%	%	STAMP	/min	%	g/s	g/s	STAMP	/min	%	mbar	mbar
4960	92	0	0	132,15	4920	11,3	12,14	11,47	132,33	4880	10,5	1010	1080
4840	92	0	0	132,68	4760	10,5	12,56	11,75	132,85	4720	11,3	1010	1070
2320	94	0	-0,8	257,2	2320	34,6	18,47	16,67	257,38	2320	34,6	1010	1050
2320	94	2,3	0,8	257,73	2320	31,6	26,44	19,83	257,9	2320	72,9	1600	1030
2760	94	1,6	5,5	258,25	3640	92,5	88,17	83,92	258,42	4560	109,8	1610	1320
4760	94	0	0	258,77	4840	145,9	162,64	164,67	258,93	4920	151,1	1600	1670
5000	94	0	0	259,28	5040	148,1	163,83	165,08	259,45	5120	145,1	1580	1610
5160	94	0	0	259,8	5160	140,6	164,56	162,31	259,97	5240	139,8	1600	1560
5320	94	0	0	260,32	5360	142,1	171,75	166,5	260,51	5440	141,4	1620	1580
5480	94	0	0	260,88	5560	141,4	176,47	183,28	261,06	5600	142,1	1650	1610
5680	94	0	0	261,42	5760	142,9	182,11	190,67	261,6	5840	142,1	1650	1650
5880	94	0	0	261,97	5960	142,9	189,89	200,28	262,14	6040	144,4	1650	1650
6080	94	0	0	262,51	6160	142,1	195,44	201,75	262,69	6200	142,1	1660	1660
6240	94	0	0	263,07	6320	139,8	200,33	198,47	263,26	6360	138,3	1670	1670
6440	94	0	0	263,63	6480	135,3	197,58	198,47	263,82	6520	134,6	1670	1660
6560	94	0	0	264,18	6520	134,6	199,92	198,31	264,37	5800	154,1	1660	1680

[Chung]

I don't remember what gear I was in but here is mine.

	Engine Speed	Engine Load	Bank 1	Bank 1
Time Stamp	/min	%	g/s	g/s
228.61	2680	97	67.42	73.75
228.7	2720	103	73.78	81.97
228.78	2840	111.3	83.28	84.19
228.87	3120	118.8	103.03	98.42
228.94	3360	127.1	114.83	117.61
229.02	3800	137.6	138.03	140.14
229.08	4040	148.9	157.08	155.06
229.14	4320	156.4	164.08	171.19
229.23	4400	167.7	175.14	192.42
229.31	4720	173.7	184	200.06
229.39	4680	179.7	188.03	203.58
229.46	4760	181.2	189.44	205.25
229.54	4880	180.5	185.11	204.69
229.62	4960	178.9	191.36	202.44
229.69	5000	185	188.72	205.08
229.77	5040	185.7	193.11	203.75
229.85	5080	175.2	188.53	204.86
229.92	5160	176.7	182.89	205.42
230.01	5200	172.2	175.33	200.14
230.1	5280	170.7	179.25	201.75
230.19	5360	169.9	173.39	197.22
230.27	5400	166.2	173.53	195.42
230.36	5480	163.9	177.94	199.28
230.46	5520	161.7	176.86	198.67
230.55	5640	159.4	172.81	200.28
230.64	5720	159.4	178.17	198.25
230.71	5760	157.9	178.17	198.64
230.81	5840	155.6	182.03	203.58
230.88	5880	155.6	181.75	198.67
230.97	5960	152.6	186.75	203.58
231.05	6000	151.1	192.25	208.22
231.14	6080	150.4	192.97	205.08
231.22	6160	148.9	194.11	208.42
231.3	6200	147.4	193.42	208.92
231.38	6280	146.6	196.39	213.53
231.48	6320	145.1	197.81	213.53
231.57	6400	145.9	198.72	211.81
231.65	6480	143.6	198.25	218.72
231.72	6480	142.9	198.25	215.22
231.8	6480	143.6	200.81	211.81
231.9	6560	142.1	201.39	211.81

[4everRS]

Szymek, sorry I doubted, looks like you've got a nice strong car there.

Chung, are you using Revo? Looks like 3rd gear. 416 combined is pretty good. It would be real interesting to see what a dynojet shows at the wheels to test that hp theory.

[SzymekCRX]

Szymek, sorry I doubted, looks like you've got a nice strong car there.

Chung, are you using Revo? Looks like 3rd gear. 416 combined is pretty good. It would be real interesting to see what a dynojet shows at the wheels to test that hp theory.

I'll know whether it's really stron next week when I'll finally become dyno'ed again after all my garage mods (and MTM TCU from Hoppen self-install before it)