---===The Official MAFT-Pro Thread===---

[Blue94VR4inNM]

Bob,
I noticed in another thread you were talking about WOT and Cruise AFR tracking. Does the MAFTPRO have to calculate the AFR continuously, or does it fill in a fuel map that is referred to after being calculated once?
-- Josh

[TurboBob]

Originally Posted by DriveFast99

mine has been fine eversince i got my tune in order. it used to be horrible, know i have no problems.

on a side note how do i instal my wideband? i lost the original papers that came witht he pro, and know i have know idea what to install to wear and all that good stuff.

i have 2 purple wires that have not been installed that hang from my pros connectors. doesnt one go to a ground in the ecu and one run to the wideband? and where does my aem wideband output signal tap into the pro? and what do i set the pro to for the aem wideband? basiclly i need every possible instruction for the pro and installing the wideband. thanks

Which AEM, can you post the instructions?

In the 10 pin connector: Orange = Wideband signal Purple=Wideband ground

In the Pro, AFR source, set to 3

Then you can tune the AFR tracking.

Bob

[TurboBob]

Originally Posted by Blue94VR4inNM

Bob,
I noticed in another thread you were talking about WOT and Cruise AFR tracking. Does the MAFTPRO have to calculate the AFR continuously, or does it fill in a fuel map that is referred to after being calculated once?
-- Josh

Currently the Pro does not "self tune", but rather corrects to the desired AFR in real-time. Self tuning is a real in the future, but its tricky to set up well. It is easy to see what corrections the AFR tracking system is making and enter them into the pro.

Bob

[Rustang Cobra]

Originally Posted by Blue94VR4inNM

Bob,
I noticed in another thread you were talking about WOT and Cruise AFR tracking. Does the MAFTPRO have to calculate the AFR continuously, or does it fill in a fuel map that is referred to after being calculated once?
-- Josh

first you must have a somewhat decent base tune done by logging fuel trims and making changes in the maftpro, once you have the base tune done (takes like 15 mins for me)

afr is taken from the wideband of your choice....aem, lc1, lm1, plx etc.

you enable afr tracking, then set the target afr at each rpm 1000-8000 in 1000rpm increments, in this case 14.7:1 , you then set the gain (the amount that the car will add or take away each time it tries to change the tune to get to your target AFR)

for example gain 5.5 and target 14.7:1 would mean that the car would lean out by -5.5% after it sees that the tune has drifted slightly rich, it will take out 5.5% fuel multiple times until you either hit 14.7:1 or overshoot in which case it will add fuel now at 5.5%, however if the gain is too high, eg. 20.5 the maftpro will overshoot and send you too lean and then too rich, etc.

you can also set limits on how far lean and how far rich the tune can drift from your base tune during afr tracking. on my car i have it set to lean out a max of -10% and richen up a max of 15% on its own.

[RobBeck]

People with good tunes should start posting their tune screen shot like Turbobob posted, and your associated Injector size.

Rob

[DriveFast99]

Originally Posted by TurboBob

Which AEM, can you post the instructions?

In the 10 pin connector: Orange = Wideband signal Purple=Wideband ground

In the Pro, AFR source, set to 3

Then you can tune the AFR tracking.

Bob

i sort of left he instructions at a friends house but its the ugeo aem standalone gauge.
so where does that second purple wire go that comes form the 6 pin? no where??

and im kinda confused on ow hthe target af works? i thought i picked 11.5:1 at WOT and it tunes itself to 11.5:1. isthis true? as for driving around town my car runs great and hopefull will stay that way.

[TurboBob]

Originally Posted by DriveFast99

i sort of left he instructions at a friends house but its the ugeo aem standalone gauge.
so where does that second purple wire go that comes form the 6 pin? no where??

and im kinda confused on ow hthe target af works? i thought i picked 11.5:1 at WOT and it tunes itself to 11.5:1. isthis true? as for driving around town my car runs great and hopefull will stay that way.

The other purple wire is an aux trigger. If you have a different race tune from your street tune, you can set it up to switch with the aux wire.

Yes, but it doesn't learn how to stay at 11.5:1. You have to look to see if its adding or subtracting fuel and make the tune change yourself.

Or you can just let the wideband do the work. (which is how I use it)

Bob

[DriveFast99]

Originally Posted by TurboBob

The other purple wire is an aux trigger. If you have a different race tune from your street tune, you can set it up to switch with the aux wire.

Yes, but it doesn't learn how to stay at 11.5:1. You have to look to see if its adding or subtracting fuel and make the tune change yourself.

Or you can just let the wideband do the work. (which is how I use it)

Bob

how do i just let the wideband do the work? how do i see if is adding/subtracting fuel? sorry i havent used this feture and/or a wideband before. so sorry for all the questons

[TurboBob]

Get the wideband installed so you can see the correct AFR on the Pro (AFR is shown on the sensor display page)

Then set your enable criteria for WOT enable of the AFR tracking (AFR tracking page in the Pro).

TPS = 2 volts, RPM = 3000, Min MAP = 150.
Gain = 20
Rich and lean limits about 10% or so.
AFR targets wherever you want them. 11.5 - 11.8 depending on boost, octane, etc.

You can watch it work by monitoring the CF value on the sensor display page. 100% means no correction. 105% means it is adding 5% fuel, etc.

Bob

[DriveFast99]

Originally Posted by TurboBob

Get the wideband installed so you can see the correct AFR on the Pro (AFR is shown on the sensor display page)

Then set your enable criteria for WOT enable of the AFR tracking (AFR tracking page in the Pro).

TPS = 2 volts, RPM = 3000, Min MAP = 150.
Gain = 20
Rich and lean limits about 10% or so.
AFR targets wherever you want them. 11.5 - 11.8 depending on boost, octane, etc.

You can watch it work by monitoring the CF value on the sensor display page. 100% means no correction. 105% means it is adding 5% fuel, etc.

Bob

ook, makes sense thanks. should have my car back running saturday so i will see what happens then.