Chris , Im amazed your fighting it this hard, wish i was closer to help, is the car hunting @ idle or running steady rpms with fluctuating afr's, Im thinking its not to do with the pro??
MAFT-Pro Tuning Thread Unofficial and Uncensored
- Thread starter chriso
- Start date
Look at my screen shot a couple posts up^^^^^
That's one of the things it's doing. Turbobob said he would look at my settings and make some recommendations. If that doesn't work, she's comin' out.
My car was running like a top prior to the Pro installation. Now I'm getting ignition misses, crazy idling, weird engine noises and valve ticking.
That's one of the things it's doing. Turbobob said he would look at my settings and make some recommendations. If that doesn't work, she's comin' out.
My car was running like a top prior to the Pro installation. Now I'm getting ignition misses, crazy idling, weird engine noises and valve ticking.
chriso said:
the MAFT pro has NOTHING to do with "weird engine noises and valve ticking".
if you are having that many problems with the MAFT pro, simply put the stock AFM back in, unplug the MAFT pro and jumper the AFM input to the ECU. if the car was running perfectly prior to the install, it should now run perfectly (if the MAFT pro is truly to blame). otherwise, you have some weak wiring somewhere (you've been messing w/the engine harness to install the MAFT pro, perhaps you've disturbed something).
yes, the MAFT pro has a learning curve. then again, what piggyback doesn't?
EDIT: more thoughts- loping idle can really only mean a few things-
-no AFM input to ECU (i.e. MAFT pro not connected right or not set right)
-no TPS input to ECU (i.e. MAFT pro not wired right)
On a side note, is there any way around the Code 24 which I think is the air temp signal? If I remember right, it is only because the stock ECU is not getting the answer it needs quick enough, but the MAFT Pro still gets what it needs.
I'll try to post my settings later today...
I'll try to post my settings later today...
drjonez said:
I am not saying that the Pro is causing the engine noises. I am only suggesting that due to the settings not being correct, that perhaps my engine is not overly thrilled with what's been going on with it.
Last week, I unplugged the Pro unit and put back my Lex AFM, this confirmed my idling and misfire issues when the engine smoothed back out. I did this to confirm that my engine was tuned when I was having the tuning issues and had to start eliminating causes.
I will recheck the wiring on everything. I spliced in all the wires when I was building my engine last year. Everything was soldered and heat shrinked.
The Pro seems to be reading the TPS voltage just fine, I don't know about the AFM stuff though. I didn't cut any wires but just tapped into everything.
Sure the MAFT Pro has a learning curve just like everything else, I understand that and I'm trying to be patient.
CPT Furious said:
Got time to post those settings and your set up injector size and turbo specs.
Thanks
Wayne
The problem I was having with the afr was a ground issue. I used the ecu sensor ground rather then the ground for the oxygen sensor itself, duh. So after doing that Tommy's car is running pretty good with 4.67. I can't really test the boost control until the engine is broken in.
I agree about needing the instructions to be updated and all the features need to be expanded on so you know what you are adjusting, how to decide when it should be adjusted, and how to know when it is adjusted correctly. I also don't think you should have to do 4 hours of reading through endless posts on multiple forums to get the basic knowledge to get the unit working, updated (software it comes with is basically obsolete and flawed), and then download files needed to get the tuner pro to work at all, then add files in certain folders that are not even mentioned in the instructions, cut a resistor inside the unit that is also not mentioned anywhere but a thread online, and even the timing feature now available is not explained anywhere but on a forum. Not everyone can spend days and nights browsing forums just to keep up on the maft pro.
I agree about needing the instructions to be updated and all the features need to be expanded on so you know what you are adjusting, how to decide when it should be adjusted, and how to know when it is adjusted correctly. I also don't think you should have to do 4 hours of reading through endless posts on multiple forums to get the basic knowledge to get the unit working, updated (software it comes with is basically obsolete and flawed), and then download files needed to get the tuner pro to work at all, then add files in certain folders that are not even mentioned in the instructions, cut a resistor inside the unit that is also not mentioned anywhere but a thread online, and even the timing feature now available is not explained anywhere but on a forum. Not everyone can spend days and nights browsing forums just to keep up on the maft pro.
My wideband is grounded to the frame behind the dash. The power source is from a tap off of the ignition harness and fused. My Maft Pro wire is tapped into the wideband ground about two inches from the WB gauge itself. Could this be a problem for me?bigaaron said:
malloynx said:
The resistor takes the place of the brown wire.
use the resistor, and disconnect the brown wire.
On the updates to the documentation, I agree. All the newer software releases are 'beta'.... The software gets updated so guys can have cool new features as soon as possible. The documentation lags behind.
But its about time to update everything. So 4.80 will be the next level with completed documentation.
I have some plans for auto-tuning or similar stuff. Anyone interested in trying those new features....?
Jones and I have some ideas for some cool driveability widgets also.
Bob
chriso said:
Use a voltmeter and measure the voltage between the orange and purple wires.
(10 pin harness)
This voltage must match the "O2" reading on the Pro sensor display.
A thought for tuning is to connect the unit with the AFM, and run in AFC mode, logging data from the Pro. Then use this data to tune the pro. I am developing a tuning procedure using this that will help. Its a ways off yet, but logging data this way was how I developed VE table #2....
The current Beta (4.78) has some features in it to help do this. Its not posted, but I can make it available if you guys want.
Bob
Sure, I'll try anything at this point, send it on over....or any other proprietary updates that only a select few people are using.turbobob said:
malloynx said:
I know you're being sarcastic. The maft pro itself is a great unit, especially considering the features it has for the money. The issue has never been getting a good stable afr under full thottle, and that is all it takes from a piggyback to make good dyno numbers. The problem has been poor driveability from lean spikes off idle and trouble getting the tip in adjustments to make any changes at all, and trouble getting it dialed in at less then 75% throttle. I'm optomistic that the newest updates will address all our issues and I am happy that they are sticking with it and helping support everyone to get it working nicely.
tookwik4u89 said:Bob , any idea why my timing monitor reads like this on tuner pro?
Perhaps a software booboo......... let me dig into it. You did clip the correct resistor
in the Pro.....?
Give me your settings (TM base, and TM correct) and your MAFT Pro version.
Make sure your input frequency looks stable...... (in tunerpro)
Bob
tookwik4u89 said:
The auto-tuning is just a way to connect both speed density hardware and the AFM/MAF and log a long drive. Then parse the log and calculate corrections to the VE table.
The driveability idea is something Dr Jonez and I are discussing to fix the fueling lag when you are boosting at part throttle.
B