Hey folks,
Its been a while since I posted about the Maftpro. Anyway, I just wanted to let you all know that version 4.80 is work pretty smoothly on a car I've been working on. The settings are not too far from the recommended settings that came with the quick startup 4.4, and the biggest change was done to the mainscale. Here is a quick run down of the car and some settings for reference. If I can, I will also attach a log file taken 9-10-07 of some cruising and boosting.
Here is the run down:
1989 Supra 7mgte
fresh block with .020" overbore JE piston.
refreshed stock rods with ARP hardware.
stock head with Cometic Head gasket.
HKS intercooler with custom lower pipes.
SP67 bolt-on kit (stock manifold) pushing ~16 psi on wastegate.
PTE 680cc injectors @ 38psi fuel pressure (w/ vac line off) so actually flow ~636cc per injector.
Maftpro running speed density with the VF wired and the Timing Monitor wired.
Mainscale on Maftpro set to -30, all other adjustments set to 0, or as per the setup instructions.
Innovate LC-1 using both analog outputs (both set to show 0v to 5v) and feeding the signals to the Maftpro and a new Innovate analog gauge called the D2. Both the gauge and the maftpro read exactly the same..NICE!:naughty:
I know that many Maftpro users are finding one software to work better than the next, here is my take on it.
If you start with a healthy car and all sensors and wires are working properly, you could use almost any version and get good results. The benefits of using the most current version, come in the way of being able to do/track new things with the maftpro. I've heard some say that 4.80 messed up there tune or whatever, but I can tell you that if you don't fully reset the Maftpro after updating , you are bound to run into issues with any version. So before you update to a new version, here is what you should do:
First save your settings (on paper or on your laptop), then Update to the new version. After the update, turn the car off, hold the two buttons on the right side of the Maftpro and then turn the key to "on". You should see a message on the maftpro screen that tells you to hold the buttons while it resets. After the reset, input your settings into the maftpro, and enjoy.
For me, starting off with a solid base (good motor, harnesses, and sensors) is half the battle. If all those things are in good shape you can start tuning.
Start by setting your VF to read normal during closed loop (a combination of adjusting the fuel pressure and the mainscale). Once you have that under control, let your stock ecu learn (get used to) the new settings and do some logs under different driving conditions. YOU SHOULD HAVE A WIDEBAND O2 SENSOR FOR THIS. Use the tools provided with the Maftpro (such as tunerpro) and study carefully what the car is doing. The best way to do this is by logging your runs and playing them back on tunerpro using the Monitor view. That view will show you up to 4 different parameters which you can use to correlate the info. Currently I'm using these 4:
Engine speed RPM
Spark advance (measured)
Wideband
Boost pressure2
During playback I can see exactly how each one relates to the next. If I also wanted to check some other reading (like the VF or tps) I would just substitute it in place of one of the four mentioned above. All this feed back should get you on the right path to getting the running great.
Before I leave I want to say this;
Most people forget that tuning should not be over complicated. Keep it simple and change only that which needs to be changed. Those people who start making adjustments to settings that don't require adjustments, tend to over complicate things. Most of them start messing with setting just because the tuning apparatus allows them to, not because they now what they are doing.
I much rather go with the mindset that if it ain't broke, don't fix it. Most often then not, when we have to make too many adjustments just get the car to idle correctly or so, chances are that the problem is elsewhere, such as faulty wiring or a bad sensor somewhere. I have found that with minimal adjustments and common sense (not trying to run 20psi on pump gas or with stock injectors etc..), you could get the car dialed in pretty good.
I highly recommend using the timing monitor feature on the Maftpro, its an engine saver. For once you could see what ECU is doing when you apply all that boost, and now you could actually do something about it without guessing. Just remember this, keep your octane high and your timing low (along with decent afr for the type of fuel that you are using) and your car should run long and hard.
For those interested, here is a log of the above mentioned car running version 4.80. The car has no other adjustments other the fuel pressure and mainscale. It is very driveable as is, and it is purposely rich on boost do to the size of the turbo, the wastegate pressure (still adjusting it down) and the low octane fuel (93oct pump gas).
NOTE: you will need the 4800.ads in order to view this properly on Tunerpro.
Also the USB to Serial wire used to connect to the laptop seems to have a faulty connection
nono: ) so the logging was bit sporadic. The driver was also trying to learn the car and its heavy clutch.
So Session 7 (titled Holy sh*T) is the best one to watch:naughty:
And now without further a due, here is the log file.
View attachment jojo.zip
Its been a while since I posted about the Maftpro. Anyway, I just wanted to let you all know that version 4.80 is work pretty smoothly on a car I've been working on. The settings are not too far from the recommended settings that came with the quick startup 4.4, and the biggest change was done to the mainscale. Here is a quick run down of the car and some settings for reference. If I can, I will also attach a log file taken 9-10-07 of some cruising and boosting.
Here is the run down:
1989 Supra 7mgte
fresh block with .020" overbore JE piston.
refreshed stock rods with ARP hardware.
stock head with Cometic Head gasket.
HKS intercooler with custom lower pipes.
SP67 bolt-on kit (stock manifold) pushing ~16 psi on wastegate.
PTE 680cc injectors @ 38psi fuel pressure (w/ vac line off) so actually flow ~636cc per injector.
Maftpro running speed density with the VF wired and the Timing Monitor wired.
Mainscale on Maftpro set to -30, all other adjustments set to 0, or as per the setup instructions.
Innovate LC-1 using both analog outputs (both set to show 0v to 5v) and feeding the signals to the Maftpro and a new Innovate analog gauge called the D2. Both the gauge and the maftpro read exactly the same..NICE!:naughty:
I know that many Maftpro users are finding one software to work better than the next, here is my take on it.
If you start with a healthy car and all sensors and wires are working properly, you could use almost any version and get good results. The benefits of using the most current version, come in the way of being able to do/track new things with the maftpro. I've heard some say that 4.80 messed up there tune or whatever, but I can tell you that if you don't fully reset the Maftpro after updating , you are bound to run into issues with any version. So before you update to a new version, here is what you should do:
First save your settings (on paper or on your laptop), then Update to the new version. After the update, turn the car off, hold the two buttons on the right side of the Maftpro and then turn the key to "on". You should see a message on the maftpro screen that tells you to hold the buttons while it resets. After the reset, input your settings into the maftpro, and enjoy.
For me, starting off with a solid base (good motor, harnesses, and sensors) is half the battle. If all those things are in good shape you can start tuning.
Start by setting your VF to read normal during closed loop (a combination of adjusting the fuel pressure and the mainscale). Once you have that under control, let your stock ecu learn (get used to) the new settings and do some logs under different driving conditions. YOU SHOULD HAVE A WIDEBAND O2 SENSOR FOR THIS. Use the tools provided with the Maftpro (such as tunerpro) and study carefully what the car is doing. The best way to do this is by logging your runs and playing them back on tunerpro using the Monitor view. That view will show you up to 4 different parameters which you can use to correlate the info. Currently I'm using these 4:
Engine speed RPM
Spark advance (measured)
Wideband
Boost pressure2
During playback I can see exactly how each one relates to the next. If I also wanted to check some other reading (like the VF or tps) I would just substitute it in place of one of the four mentioned above. All this feed back should get you on the right path to getting the running great.
Before I leave I want to say this;
Most people forget that tuning should not be over complicated. Keep it simple and change only that which needs to be changed. Those people who start making adjustments to settings that don't require adjustments, tend to over complicate things. Most of them start messing with setting just because the tuning apparatus allows them to, not because they now what they are doing.
I much rather go with the mindset that if it ain't broke, don't fix it. Most often then not, when we have to make too many adjustments just get the car to idle correctly or so, chances are that the problem is elsewhere, such as faulty wiring or a bad sensor somewhere. I have found that with minimal adjustments and common sense (not trying to run 20psi on pump gas or with stock injectors etc..), you could get the car dialed in pretty good.
I highly recommend using the timing monitor feature on the Maftpro, its an engine saver. For once you could see what ECU is doing when you apply all that boost, and now you could actually do something about it without guessing. Just remember this, keep your octane high and your timing low (along with decent afr for the type of fuel that you are using) and your car should run long and hard.
For those interested, here is a log of the above mentioned car running version 4.80. The car has no other adjustments other the fuel pressure and mainscale. It is very driveable as is, and it is purposely rich on boost do to the size of the turbo, the wastegate pressure (still adjusting it down) and the low octane fuel (93oct pump gas).
NOTE: you will need the 4800.ads in order to view this properly on Tunerpro.
Also the USB to Serial wire used to connect to the laptop seems to have a faulty connection
nono: ) so the logging was bit sporadic. The driver was also trying to learn the car and its heavy clutch. So Session 7 (titled Holy sh*T) is the best one to watch:naughty:
And now without further a due, here is the log file.
View attachment jojo.zip
Last edited:
