MAFT running..Now just needs tuning

[GrimJack]

Boost control is easy. Go to the Boost Control page, set:
TPS Spool: 3v
RPM Spool: 3000rpm
TPS Start: 80%
PSI Start: 10
DC% Start: initially set this to about 15
PSI Set: Whatever you want your boost set to... 11, 12, 13 psi, whatever you want - and whatever you think is safe for your car, of course.

Disclaimer: Mucking with this can cause your car to overboost and self destruct. Be careful, and only make very small changes, monitoring the results carefully. As you don't have a wideband - or if you do, the MAFT pro isn't configured to use it - I'd be *VERY* hesitant to turn the boost up very far.

PS: All this information is in the manual on page 20.

 

[drjonez]

...PS: All this information is in the manual on page 20.

manual? what? you mean i have to READ??!?! c'mon! :3d_frown:

manual version 1.0:

http://www.4cefed.com/maftpro/maftpromanual_v1_0.pdf

 

[CPT Furious]

It looks like you have a 3.8L motor according to your previous posts (don't know if that will effect anything or not) and you have TPS start set at 3.7V. On my car, my TPS voltage doesn't even go that high. Mine stops at around 3.6 or 3.65. Also see my post in the other thread about how you have the solenoid...

 

[gsx750r93]

And i did read the manual thats why im asking you guys.

Grimjack i tried your setting and still only pushing 6 or so.

I posted another two log that are a lot longer.

The first one is last night before i tried grimjack settings and the second is today after changing to his settings.

Nothing:icon_conf

 

[CPT Furious]

Still looks like you max TPS is 3.6 or so. I would recommend changing that, too.

 

[dbsupra90]

blockbuster lasts about 2 seconds haha.

the last one, are you going wot? i havent seen your tps voltage any higher than upper 3v range. what gear is this in?

lol you got me by 1 min about the tps

 

[CPT Furious]

Certified Toyota Ninja Hands!!!

 

[gsx750r93]

WOT????

Lol

going WOT, i dont no.

I dont understand the hole tps thing on my PC or m pro it doesnt say that its that high.

What should it be set at.

And the gear...1st,2nd and third.

Are you guys going to the ADLD file setup and changing the sessions. I think theres others on there...

So no ideas on the boost thing.

Also if the wastgate is bad can it still push 7 psi. I noticed that when it blows the pressure out when i let off the gas it sounds a lot different then before.

Is there a way i can tell if its bad or not.

Ill try my best to explain the sound but its hard.lol


Before it mad a pst pst pst ps ps when i shifted or let off gas.

Now its just a steady pshhhhhhhhhhhhhh when i let off the gas..LOL????

 

[dbsupra90]

yes i download your log and change the current session.

few things.

if you dont go wot you arent gonna see max boost. the parameters of the boost control on the mafpro uses tps voltage to base how the solenoid behaves and thereby max boost and boost curve. also, you arent gonna see full boost in 1st gear due to loading differences. nor are you gonna see max boost by going 50% throttle.

are you sure you have the solenoid hooked up correctly?

each time you make changes on the laptop are you uploading to the controller each time?

as far as the sound- it should go pshhhhhhhhhh. the pst pst pst sounds like compressor surge.

 

[gsx750r93]

HMMM solenoid

If your talking about the boost controll unit i got from doc then....

I have it plugged in

I have a vacuum coming from the turbo into the in side of the controller, then out the ex side and into the wastegate..

Each time i make a change i click on the grey up arrow that uploads it to the emulator.

I wasnt going 50% throttle either if that was what your saying. I was going 100% in the log.

Now also u said im not gonna see full boost in 1st??? I dont see it in any gears.

Plus before i did the mpro swap i did see full boost in first.

So how exactly do i go WOT or what are some good setting for it

I'm lost.... Everything i try to do to turn the boost up doesnt work...

 

[dbsupra90]

I wasnt going 50% throttle either if that was what your saying. I was going 100% in the log.

ok that was my question. then you said you didnt go wot (wide open throttle = 100%).

if that is the case you need to adjust your tps.

you might also try bypassing the solenoid (boost control) and hook the vac line from the turbo directly to the wastegate. then see what boost you are running as a reference.

dont worry, you arent alone. several people have found the boost control function tricky. just want to make sure all the "outside" issues are solid.

 

[gsx750r93]

Huh.. well thanks for the info.

Ill stop asking questions for tonight and play(tune) for myself.

Its kinda scary cause i dont have a wide band though.

 

[gsx750r93]

Well...

As of last night i went out and completely removed the boost control unit and hooked the turbo up to the wastegate or put back to stock. Then turned the boost up to how it was before when it would push 13.

Nothing.... It didnt change the boost one little bit. It is still pushing 5,6,7...
So does that mean its not the maft pro Unit or my crappy tuning and it is something else.....

Could it be????

1.Boost leak?

2.Turbo going bad?

3.Wastegate going bad?

4. And any other ideas you can think of...

 

[drjonez]

1.Boost leak?- most likely

2.Turbo going bad?- doubtful

3.Wastegate going bad?- possible

4. And any other ideas you can think of.- nope

 

[mhopemk3]

As you have heard all cars are different when comes down to the maft pro.
Do this.. Turn on your ignition(do not start). Look at your Sensor monitor and choose the TPS sensor as 1 of the items to show. Now with the Maft Pro on look at your TPS volts.. Write that number down.. Then press the gas pedal to the floor.. Write that number down..

Look at the document I attached.
What the TPS does to my understanding. In reference to what you wrote down from your TPS readings. TPS start(Boost) in the doc is set to 3.5v. If you push your pedal to the floor and it only reads 3.2v, guess what? your Boost control wont start.. I have found this works for me.. 12psi might be too much for you at this point. Try your PSI start at 7psi and PSI set to 10psi. Try the DC% at 50 and the gain at 10.

I hope I was able to shed a little light!!

 

[Aspec]

Well i was just hopeing that you guys could point out some things to make changes on. Especially considering my car was alot faster before i did this plus 2.5" IC pipes appose to the stock ones. The car runs for the most part good other then its got this wierd bog off the line.????

Ive tried, tried, and tried to turn up the boost and cant figure it out. Any one else please.

If I read your post right and you just changed your ic piping; One more vote for boost leak.:nono:

 

[gsx750r93]

I can agree with that.. :icon_bigg
I bet its something like theres no leak until it hits around 6 then just bleads the air out probably many different spots.
Well i guess im gonna just completely redoo the piping then. Instead of useing aluminum i cant weld and having a million couplers im think im gonna use some 2.5" PVC and it will be all one piece. At my work we have this thing called a hot box that you put the pvc in and it heats it up. Once it heats up you can bend it any shape you want with no kinks as long as your careful. I dont no if anyone has done this but i think that it will work great..:biglaugh:

 

[drjonez]

pvc? :3d_frown:

 

[dbsupra90]

At my work we have this thing called a hot box that you put the pvc in and it heats it up. Once it heats up you can bend it any shape you want with no kinks as long as your careful.

i have one of these on my car. except i call it a turbo. it bends pvc any shape it wants and kinks it with no regard.

i think i remember you saying the wastegate was shimmed at one time. perhaps the wastegate arm is bent. and yes good chance of a boost leak as well.

 

[gsx750r93]

Ahaa... i noticed that when i took the shimms off that the wastegate was kinda stuck in the out position on one side and didnt want to go back in towards the turbo at first...

Any suggestions on fixing it???