Adjust Injector Scale or Disable Fuel Trim affecting WOT?

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Apr 9, 2010 | 12:01 AM

#16

extreme evo

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Joined: Nov 2004

Posts: 20

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hi,
I m on the rc 750cc rc injectors,how can I scale my injector latency table?what's the correct values?
my car tuned with ecuflash and it does'nt have maf scale.Have I big trouble?
Best regards.

Apr 9, 2010 | 03:51 AM

#17

zikizira

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Joined: Aug 2008

Posts: 47

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From: Brazil

Quote:

Originally Posted by criptballer

i'd be willing to bet they're super lean. when you STFT goes to 0 you enter open loop at idle. did you adjust the idle area of the fuel table to compensate for the changes you made to the MAF scaling?

I am using the stock fuel table. I am going to tune the timing and fuel tables today and tomorrow. Should I add fuel in lower loads/rpm area of the high octane fuel table?

Thank you,
Ziki

Apr 9, 2010 | 04:25 PM

#18

zikizira

Thread Starter

Newbie

Joined: Aug 2008

Posts: 47

Likes: 0

From: Brazil

This is the final MAF Compensation Tables I have used to give me FT < 2% (cruise < 0.8%):

Code:

MAF Compensation Table
0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.027466	0.100708	0.228882	0.448608	0.717072	1.060814	1.600835	2.047305	2.461139	2.883130	3.368484	3.999518	4.609932

MAF Compensation Table #2
5.318837	6.008109	6.664007	7.490111	8.392764	9.410801	10.389769	11.441578	12.568718	13.851870	15.107646	16.459725	17.778976	19.256500	20.735807	22.253602	23.888247	25.665857	27.602350	29.573807	31.561056	33.429172	35.371714	37.177563	39.683320	42.306942	44.568861	42.824995	45.375726	51.346849	54.051839	56.823974	59.692030	62.665601	65.773462	69.006021	72.372870	75.845233	79.413517	83.106500

MAF Compensation Table #3
86.914589	90.770638	94.760978	98.693765	102.616960	106.664853	110.990918	115.489643	120.208987	125.168135	130.271166	135.575632	141.043165	146.692949	152.505800	158.433756	164.543964	170.807647	177.186435	183.728290	190.471581	197.349162	204.380217	211.574339	218.845199	226.240757	233.856934	241.588217	249.463383	257.463247	265.453519	273.616450	282.047961	290.796014	299.764686	309.021123	318.162455	327.303786	336.656145	346.114018	355.926800	365.883466	376.204633	386.756012	397.528011	408.549407	419.810606	431.321201	443.071601	443.071601

The above code uses TABs, soh you can copy+paste them directely to EcuFlash.

Here is some pulls (AFR x RPM) before and after. I was really super lean. Thats probably the reason I have got "System Too Lean" code twice, even without going WOT. After the MAF Adjusments, my car become kind of rich, except for the low RPM area. Should I adjust MAF a little more, or use the Fuel Tables to correct this (if necessary)?

If anyone is interested, I have used Python 2.6 in order to help adjusting MAFs and build the graphics (PyLab, with MatplotLib). If you wanna the source code (which includes the ecu diff functions), PM me.

Thank you,
Ziki

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