So maybe you guys can help me since there is only 1 other guy i know running a maftpro on his 1uz, but i'm having this weird issue that happens occasionally. In between shifts the car seems to lean out (off the a/f gauge) then dump gas back in. so basically inbetween shifts i have this bucking feeling. (car looses power for maybe 1 sec right after i shift while the motor rpms go down) this is happening on just city cruising. any ideas? sorry i dont have any logs... i honestly still need to learn alot about the maftpro still. thanks :1zhelp:
maybe you can help me... maft pro 1uztt
- Thread starter viper92086
- Start date
viper92086;1414095 said:
I have a lot to learn about the Maft-Pro also but I'll try to help. Leaning out after letting of the gas is normal. If you are getting a bucking between shifts if may be your gain adjustment. Too high will cause fluctuations, too low the Maft will not adjust quick enough. Try playing with the gain in Tune responce to see if you can work it out.
Maybe the Maft-Pro experts will chime in with some better info
btw what is the correct settings to turn off ptt? is it controlled byt he idle tps and the cruise tps settings? mine are both set to 5.0 and i've seen others set these to zero.
You can verify that PTT tracking (or AFR tracking, for that matter) are off by watching the 'AF Tracking enable' in the ALDL Flags section.
Read this: http://www.supramania.com/forums/showthread.php?t=43839
5.0 for 'Part Throttle Tracking Idle TPS' should disable all PTT. It should do this because the TPS will never generate 5 volts, and this value needs to be exceeded before PTT will kick in.
Read this: http://www.supramania.com/forums/showthread.php?t=43839
5.0 for 'Part Throttle Tracking Idle TPS' should disable all PTT. It should do this because the TPS will never generate 5 volts, and this value needs to be exceeded before PTT will kick in.
Don't know if you have seen this or if the link is working, sometimes it works and sometimes it dosen't. http://www.fadingworld.com/Supra/MAFT/Manual%204.80.php
the car is weird.. i hasnt happened again for the past 2 days, but heres my config and some small logs i took.
Vehicle Select 00
Number of Cylinders 4
Displacement 4.00 Liter
Airflow Source 0x00 Select
Manifold pressure source 00
Load Source 0x01
Barometer Comp Mode 00
Frequency Out Mode 0x04
V Out1 Mode 0 Select
V Out2 Mode 0 Select
AFR Source 3 Select
Freq In Mode 11
Aux 1 mode 00
Flow Error Mode 0.00
Main Scale -24.00
Volts Out 1 Max 2.45 limit
Volts Out 2 Max 3.53 volts
Afterstart enrichment 0.00
Tune Load Point, Low 36.40
Tune Load Point, Mid 100.10
Tune Load Point, High 143.00
Freq Out Max 0
Timing Monitor, Base Adjust 0.00
Timing Monitor, Correction 1.23
IAT Airflow 15.00
FE Smoothing 30
Spark Base 15.00
Boost control TPS Spool 5.00
Boost control RPM Spool 2400 RPM
Boost control TPS Start 5.00 Volts
Boost control PSI Start 5.00 PSI
Boost control DC% Start 10.00 Percent
Boost control PSI Set 10.00 PSI
Boost control PSI Aux 10.00 PSI
Boost Control Gain 0.00
Boost Control DC% Start Aux 10.00 Percent
Boost Control Max RPM 0.00
AFR Min TPS 5.00
AFR Min RPM 3200
AFR Min Load 166.50
AFR correction lean limit 10.00
AFR correction rich limit 10.00
AFR correction gain 0.00
AFR Aux % 0.00
AFR Tracking, Enable delay 0.00 Seconds
TPS Enrichment 0.35
TPS Decay 0.75
Throttle Body Size 8
TPS MAP Max 100.16
MAP Enrichment 0.35
Boost Enrichment 0.10
MAP TPS Min 0.80 Volts
MAP RPM Min 2560.00
MAF Limit TPS Threshold 0.00 Volts
MAF Limit 0.00
MAF Limit / KRPM 0.00 Grams/Sec
MAF Limit RPM Min 0.00 RPM
MAF Limit Time 0.00 seconds
OffIdle Enrichment % 0.00 %
Part Throttle Tracking Idle TPS 5.00
Part Throttle Tracking Idle RPM 640.00
Part Throttle Tracking Idle A/F Ratio 13.50
Part Throttle Tracking Cruise TPS 5.00
Part Throttle Tracking Cruise RPM 2560.00
Part Throttle Tracking Cruise Load 91.05
Part Throttle Tracking Cruise A/F Ratio 14.50
Part Throttle Tracking Lean Load 84.55
Part Throttle Tracking Lean Delay 10.00
Part Throttle Tracking Lean A/F Ratio 16.00
Part Throttle Tracking Gain 0.00
Part Throttle Tracking Startup Delay 74.51 Percent
Enhanced TPS RPM threshold 4800.00
Enhanced TPS Load Threshold 188.24 KPA
look at session 3-5 in the adl. ignore the name because i was messing with ptt for the hell of it but i switched everything back to my old settings. i also noticed that my boost pressure never went into the positive... escpecially on the last session where i really got on it.... what could that be?
edit:: i looked at another old log i had and the boost pressure did get in the postives. i will try to confirm that again during my lunch break. perhaps my laptop was having an issue (its got that hard drive protection mode where if it senses vibration it parks the head... meaning i might have lost data)
Vehicle Select 00
Number of Cylinders 4
Displacement 4.00 Liter
Airflow Source 0x00 Select
Manifold pressure source 00
Load Source 0x01
Barometer Comp Mode 00
Frequency Out Mode 0x04
V Out1 Mode 0 Select
V Out2 Mode 0 Select
AFR Source 3 Select
Freq In Mode 11
Aux 1 mode 00
Flow Error Mode 0.00
Main Scale -24.00
Volts Out 1 Max 2.45 limit
Volts Out 2 Max 3.53 volts
Afterstart enrichment 0.00
Tune Load Point, Low 36.40
Tune Load Point, Mid 100.10
Tune Load Point, High 143.00
Freq Out Max 0
Timing Monitor, Base Adjust 0.00
Timing Monitor, Correction 1.23
IAT Airflow 15.00
FE Smoothing 30
Spark Base 15.00
Boost control TPS Spool 5.00
Boost control RPM Spool 2400 RPM
Boost control TPS Start 5.00 Volts
Boost control PSI Start 5.00 PSI
Boost control DC% Start 10.00 Percent
Boost control PSI Set 10.00 PSI
Boost control PSI Aux 10.00 PSI
Boost Control Gain 0.00
Boost Control DC% Start Aux 10.00 Percent
Boost Control Max RPM 0.00
AFR Min TPS 5.00
AFR Min RPM 3200
AFR Min Load 166.50
AFR correction lean limit 10.00
AFR correction rich limit 10.00
AFR correction gain 0.00
AFR Aux % 0.00
AFR Tracking, Enable delay 0.00 Seconds
TPS Enrichment 0.35
TPS Decay 0.75
Throttle Body Size 8
TPS MAP Max 100.16
MAP Enrichment 0.35
Boost Enrichment 0.10
MAP TPS Min 0.80 Volts
MAP RPM Min 2560.00
MAF Limit TPS Threshold 0.00 Volts
MAF Limit 0.00
MAF Limit / KRPM 0.00 Grams/Sec
MAF Limit RPM Min 0.00 RPM
MAF Limit Time 0.00 seconds
OffIdle Enrichment % 0.00 %
Part Throttle Tracking Idle TPS 5.00
Part Throttle Tracking Idle RPM 640.00
Part Throttle Tracking Idle A/F Ratio 13.50
Part Throttle Tracking Cruise TPS 5.00
Part Throttle Tracking Cruise RPM 2560.00
Part Throttle Tracking Cruise Load 91.05
Part Throttle Tracking Cruise A/F Ratio 14.50
Part Throttle Tracking Lean Load 84.55
Part Throttle Tracking Lean Delay 10.00
Part Throttle Tracking Lean A/F Ratio 16.00
Part Throttle Tracking Gain 0.00
Part Throttle Tracking Startup Delay 74.51 Percent
Enhanced TPS RPM threshold 4800.00
Enhanced TPS Load Threshold 188.24 KPA
look at session 3-5 in the adl. ignore the name because i was messing with ptt for the hell of it but i switched everything back to my old settings. i also noticed that my boost pressure never went into the positive... escpecially on the last session where i really got on it.... what could that be?
edit:: i looked at another old log i had and the boost pressure did get in the postives. i will try to confirm that again during my lunch break. perhaps my laptop was having an issue (its got that hard drive protection mode where if it senses vibration it parks the head... meaning i might have lost data)
Number of cyl. should be 6, displacement should be close to 3 liter, the other setting I'm not real sure about I'm NA.
Both of your gain settings are at "O" , I'd try 5-7 to start with. TB size might be a little big IDK for sure, some of the turbo guys will probably chime in on the other settings and correct me if I'm wrong, a lot of the settings just don't look right to me.
Both of your gain settings are at "O" , I'd try 5-7 to start with. TB size might be a little big IDK for sure, some of the turbo guys will probably chime in on the other settings and correct me if I'm wrong, a lot of the settings just don't look right to me.
Btw I don't have a 7m. Its a 1uztt. As an update I had sneakypete take a look at my car yesterday. The car pulls amazing now. We think that the idle issues aren't maftpro related because at cruise and wot the car is perfect. Ill be looking into it more tonight.
If you didn't know the stock 1UZ computer retards timing when it shifts when using the automatic transmission. Don't know if that helps any or not. I have a 1UZ in my 88 toyota truck.