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Old 09-01-2009, 09:09 PM   #1
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Exclamation Need help diablo Mafia adjustments

Ok my mafia was set on 2 and now I need to mve it up to setting 3 for 60lb injectors.

This is in my instructions
The best way to use the MAFia is to tune the vehicle for idle and cruise and lower RPM ranges at
wide open throttle rpm before you install the MAFia.

Once you have the car running properly install the mafia and set it to 0.

Start the vehicle and make sure that it runs just like it did before the installation of the mafia.
(check fuel trims and load)
Once you have checked to make sure the vehicle runs the same, you can set the mafia to the
desired setting to support the horsepower you intend to make.
Make sure the key is off whenever you change the setting on the MAFia.

You will now apply the necessary changes to your tune to accommodate for the new setting on the
MAFia. This can be accomplished two ways.

Method One – works for all tuning software


Using the settings chart, reduce the following parameters in your software by the correction factor.

Fuel Injector Low Slope
Fuel Injector High Slope
Air Mass Displacement of one cylinder

Setting Correction Factor Range Notes
0 No tuning required Stock Stock/No Change
1 No tuning required Stock minus 5% Leans Signal
2 24% or multiply by .76 5.5v – 5v or .90 Tuning Required
3 41% or multiply by .59 6v-5v or .83 Tuning Required
4 53% or multiply by .47 6.5v-5v or .77 Tuning Required
5 62% or multiply by .38 7v -5v or .71 Tuning Required
6 70% or multiply by .30 7.5v – 5v or .67 Tuning Required
7 No tuning required Stock plus 5% Richens Signal

For example
Original tune has a value of 40 for the Fuel Injector Low Slope. You install the MAFia on setting
2. Your new setting for Fuel Injector Low Slope will be 40 x .76 = 30.4


I believe this is were I make the adjustments and these are the settings for the #2 setting



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Old 09-01-2009, 10:54 PM   #2
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you also need to change engine displacement like it says...


I have also heard of people just tuning the mtf while its on the setting you will use, and leaving the injector and displacement settings alone. Not sure if this is correct?
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Old 09-02-2009, 01:15 AM   #3
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well if all else fails call Tom. I had to change Fuel Injector Low Slope,
Fuel Injector High Slope, and engine displacement.

Its almost like starting the tune over again so I'll be doing some data logging and tuning tomorrow
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Old 09-02-2009, 07:56 AM   #4
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You didnt tell me you were already set to 2 , what we did will have to be changed some , I thought you were on 0

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