MAFT Help

[eclipse90gsxt]

I am wondering I keep seeing people using the maft in 0 settings then using the afc to tune.

I have an afc already from long ago, and for now untill I got some more time, then use the maft for what it can do.

Anyways I was wondering if you use the afc do you have to set the injector level for the maft? I use 650's, but would I put that or put 450's so the maft thinks its stock, so I can use the settings on my afc, or do I set the injector setting at 650 then go from there richening up my afc from what it is now?

Also if I do this for now I don't have to hook any wires up for rpm tuning?

Yes I tried to search but not an answer's I needed.

 

[latvianrkey]

I am just starting to tune with my MAFT. I have been running with it at zero settings and using my SAFC to tune. I have noticed a few problems with this: When I go WOT, my A/F gauge reads all the way lean for a few seconds, then jumps to rich and the car takes off. After tuning the base settings on the MAFT, I do not have this problem anymore. That is as far as I am right now, I have the base setting and the idle tuned, but that is it. I will post more as I go along, maybe make this a useful thread for basic tuning of the MAFT.

To answer your questions, I would setup the car per the MAFT instructions, then datalog a few runs and adjust in the car with the SAFC, then use the curve of the SAFC to adjust the knobs on the MAFT...reset SAFC to zero, and do again.....repeat until you are within about +/- 10% on the SAFC. This is my plan thus far.

 

[kpt4321]

What MAFT version do you have? If you have 2.0, then you don't even need a SAFC. If you have version 1.37, then you probably want it.

If you have 1.37, I would suggest using the base setting to get the fuel trims as close to in line as possible, and then doing the rest of your tuning on th SAFC.

 

[latvianrkey]

I have the latest and greatest version. I have read that I can fine tune with throttle points on the MAFT, but I think it would be a benefit to have in cockpit contols. And I already had the SAFC from before so...

 

[eclipse90gsxt]

Alright thanks, yeah I was asking because when I set the maft for the aux and base knobs for 650's (which I run) the car barley starts and I have to stay on the gas to keep it alive or it dies. I am going to try setting it at 550's and see how it runs. It has run so far fine with all things at zero and running -30% on the afc for the 650's. I haven't started high settings yet for the new turbo.

 

[latvianrkey]

yeah, i use to run everything at 0 on the maft too, and the afc at like -40 for the 680's. I set the MAFT on the 680 setting and it barely ran. I think I have it at something like the 610 or 620 cc setting. Ill let you know how the tuning progresses.