MAFT-Pro Tuning Thread Unofficial and Uncensored

[chriso]

you only use AFR and PT tracking if you want. it's there as an option once you're semi-tuned.

as the name suggests, obviously AFR tracking will affect AFR if turned on.

Doesn't AFR tracking affect the ranges such as Hi/Mid/Lo Tuning? If I turn it off won't I lose this feature, or will the Pro maintain the AFR's as necessary through another built in feature? Isn't the whole point of this thing to maintain a safe AFR through all RPM loads, so therefore shouldn't I leave it on?

 

[drjonez]

Doesn't AFR tracking affect the ranges such as Hi/Mid/Lo Tuning? If I turn it off won't I lose this feature, or will the Pro maintain the AFR's as necessary through another built in feature? Isn't the whole point of this thing to maintain a safe AFR through all RPM loads, so therefore shouldn't I leave it on?

AFR tracking is applicable only to WOT (when it functions actually is dictated Min TPS/RPM/MAP).

no, it doesn't affect other tuning, it simply does whatever it needs to in order to maintain set AFR.....in other words it's "self-tuning" on the fly, completely outside of whatever you have in low/mid/high.

the whole point of AFR tracking is to fine tune your tune, that's it.

 

[chriso]

AFR tracking is applicable only to WOT (when it functions actually is dictated Min TPS/RPM/MAP).

no, it doesn't affect other tuning, it simply does whatever it needs to in order to maintain set AFR.....in other words it's "self-tuning" on the fly, completely outside of whatever you have in low/mid/high.

the whole point of AFR tracking is to fine tune your tune, that's it.

OK. So, I would adjust my low/mid/high tune settings to maintain the AFR at 11.5 or so at the different RPM load (including boosting). This should be enough to keep my engine happy and in the ballpark (How about them Tigers, btw!!!!). If AFT Tracking is turned on, and it maintains set AFR, then why do I even need to fool with the low/mid/high settings at all?

 

[born2drv]

I think what's he trying to say is that low/mid/high tunes your AFRs to where you want them..... then when you are at full throttle (beyond "high"?) thats what the AFR tracking is for.... or maybe to fine-tune the upper portion of "high" ... correct me if i'm wrong

 

[tookwik4u89]

OK. So, I would adjust my low/mid/high tune settings to maintain the AFR at 11.5 or so at the different RPM load (including boosting). This should be enough to keep my engine happy and in the ballpark (How about them Tigers, btw!!!!). If AFT Tracking is turned on, and it maintains set AFR, then why do I even need to fool with the low/mid/high settings at all?

If your wide band takes a crap, it would not be good if your settings are not right, thats why you get it close first. And I love the AFR tracking, it does a great job of holding my a/f at 11.5 when Im romping on the gas!

 

[drjonez]

OK. So, I would adjust my low/mid/high tune settings to maintain the AFR at 11.5 or so at the different RPM load (including boosting). This should be enough to keep my engine happy and in the ballpark (How about them Tigers, btw!!!!). If AFT Tracking is turned on, and it maintains set AFR, then why do I even need to fool with the low/mid/high settings at all?

you use low/mid/high to tune your fuel curve for your car based on mods, etc.

consider AFR tracking an "add-on" or special bonus to help keep things really in check.

sure you could run AFR tracking all the time, but as took said, what happens when your WB takes a poop or becomes disconnected?

yeah, the tigers rock! everyone here in DTW is fairly excited...

I think what's he trying to say is that low/mid/high tunes your AFRs to where you want them..... then when you are at full throttle (beyond "high"?) thats what the AFR tracking is for.... or maybe to fine-tune the upper portion of "high" ... correct me if i'm wrong

no sir. see above.

 

[chriso]

Well my dyno session was a waste of time. I ended up hitting fuel cut at 16 psi :cry: and then the dyno wideband wasn't reading correctly (or so he says it was mine) so he didn't want to continue, plus it was about 8:00 pm by then. I had welded in a bung on Friday night for the shops wideband but we couldn't get the plug out at the shop, so he used the sniffer instead. Now I have to order a new Bosch sensor to be sure it's not mine that's not reading correctly.

Does anyone know why I am hitting fuel cut at 16 psi ??? Is there a setting on the MAFT Pro that alleviates this. I've seen everyone else running well over that (20+psi) with no cut issues.

I'm running speed density.

 

[suprastanger507mgte]

Well my dyno session was a waste of time. I ended up hitting fuel cut at 16 psi :cry: and then the dyno wideband wasn't reading correctly (or so he says it was mine) so he didn't want to continue, plus it was about 8:00 pm by then. I had welded in a bung on Friday night for the shops wideband but we couldn't get the plug out at the shop, so he used the sniffer instead. Now I have to order a new Bosch sensor to be sure it's not mine that's not reading correctly.

Does anyone know why I am hitting fuel cut at 16 psi ??? Is there a setting on the MAFT Pro that alleviates this. I've seen everyone else running well over that (20+psi) with no cut issues.

I'm running speed density.

Chris,
Change tuning shops. Sorry couldn't make it, but I was dying to know how you did.

 

[drjonez]

Well my dyno session was a waste of time. I ended up hitting fuel cut at 16 psi :cry: and then the dyno wideband wasn't reading correctly (or so he says it was mine) so he didn't want to continue, plus it was about 8:00 pm by then. I had welded in a bung on Friday night for the shops wideband but we couldn't get the plug out at the shop, so he used the sniffer instead. Now I have to order a new Bosch sensor to be sure it's not mine that's not reading correctly.

Does anyone know why I am hitting fuel cut at 16 psi ??? Is there a setting on the MAFT Pro that alleviates this. I've seen everyone else running well over that (20+psi) with no cut issues.

I'm running speed density.

what does your tune look like? untuned = FCO.

 

[Supra]

of course there's info on MKIIItech:

http://www.mkiiitech.com/forums/viewtopic.php?t=593

you want to shut AFR tracking off unit you have your tune pretty close.

I was re-reading this article and I believe there is a minor error on that page. Where it says:

" * Make sure the idle contact point is Off (Note: this likely refers to the contact switch between pins 1 (E1) and 2 (FC) in the AFM -- jeff) "


The "idle contact point" in referance is the IDL switch within the TPS, not the AFM.

 

[drjonez]

eh?

 

[Supra]

eh?

On your site, on the Vf info page, there's a section that reads:

"Make sure the idle contact point is Off (Note: this likely refers to the contact switch between pins 1 (E1) and 2 (FC) in the AFM -- jeff)"


I believe that the "idle contact point" that is referanced is not "pins 1 (E1) and 2 (FC) in the AFM", but rather the IDL switch within the TPS. I think that this would be pins IDL and E2 of the TPS. I don't see a pin FC within the AFM, or anywhere else.

 

[drjonez]

ah. the thread you linked was the MAFT pro thread...

 

[Supra]

ah. the thread you linked was the MAFT pro thread...

Oops, my bad... :biglaugh:

 

[drjonez]

np man...that's why i was so confused!

 

[gsx750r93]

Any one no a good base setting to run with stock turbo and injectors.... Im looking to push 13,14,15 psi maybe. No matter what i do i cant get it to push more then 7. Please help just any little changes from the basic will help. Or can anyone else with a setup like mine post up there bin files or settings.....

 

[americanjebus]

this thread has been arround for a while and we still have people trying to get everything dialed in.

gsx i feel your pain man, i just read this ENTIRE thread and i beleive its time for a section specificaly for the maftpro or piggyback systems because all the information i am getting is from random threads here and there that is really taking a LONG time just to find the information much less understand it. Hopefully the maftpro GB will be done soon so i can get mine setup and i can hopefully help you out. For now we just need a database where we can upload the startup guides and have all these maftpro threads in one place.

 

[drjonez]

Any one no a good base setting to run with stock turbo and injectors.... Im looking to push 13,14,15 psi maybe. No matter what i do i cant get it to push more then 7. Please help just any little changes from the basic will help. Or can anyone else with a setup like mine post up there bin files or settings.....

not the best idea to run other people's settings- EVERY car is different. take the time to LEARN how to use whatever tuning device you have (MAFT pro, SAFC, etc.)....if that's too difficult, take it to a shop that has the know how to do so. using someone else's settings can only lead to bad things....i.e. the infamous "why did my engine blow up" post....:1zhelp:

 

[CPT Furious]

I also believe the good Doc is working on new documentation as well for the firmware version. As for your boost problem, do you have any pics of how you have the solenoid? Where are you taking the vacuum/pressure signal from? Directly from the turbo actuator or something else? It almost sounds like it's not hooked up and the factory solenoid is still controlling the pressure.

 

[mhopemk3]

GSX what are your boost settings? PSI start, DC % etc??