born2drv said:
how do you know the gnd isn't the problem? where is the MAFT pro grounded? where is the WB grounded?
My MAFT-PRO THREAD!
- Thread starter born2drv
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how do you know the gnd isn't the problem? where is the MAFT pro grounded? where is the WB grounded?
get a voltmeter, and measure the voltage between the orange and purple wires. Compare this to the "O2" reading on the Pro. They should agree.
Be sure your tracking features (AFR Tracking and PT Tracking) are disabled (set the TPS thresholds to 4.9)
Verify where your grounds are connected. Make sure the harnesses are plugged into the Pro well (unplug and re-plug them about 10 times to 'break them in')
High idle speed is generally from too much air getting in. Stuck throttle, vaccuum leak, PCV line off, etc.
Bob
Be sure your tracking features (AFR Tracking and PT Tracking) are disabled (set the TPS thresholds to 4.9)
Verify where your grounds are connected. Make sure the harnesses are plugged into the Pro well (unplug and re-plug them about 10 times to 'break them in')
High idle speed is generally from too much air getting in. Stuck throttle, vaccuum leak, PCV line off, etc.
Bob
turbobob said:
ok cool, thanks.... it may be a leak in my IC pipes, i can't boost over 7psi because it gets super rich and bogs badly so i let off the throttle. i thought maybe it was a problem with my fuel adjustments.... i'll try and see if all the pipes are ok.
the AFR tracking feature is dissabled (both idle/cruise TPS set to 4.90)
as for the voltage, i don't have a voltmeter.... i'll figure out something and get back to you with an answer. thanks again for your help
Bingo, unless im goofy, you need the ground output from your wideband controller to the maft pro, not the body ground, that could be it. The ground for your wideband gauge should go to controller , not body also.born2drv said:
Thanks guys. i don't pretend to be an expert on supras, tuning cars, etc.. Everything in my car now (including the maftpro) i've paid someone to install. i just don't have the time to work on my car and i'm very impatient and want instant results plus i always feel like i'm gonna screw something up and figure it's cheaper to have someone fix it for me then for me to blow it up and do everything 2-3x. As some of you know, I'm a jeweler, I'm not a mechanic but I'm determined to learn.
Anyhow I'm going to go to Sears and by myself a nice voltmeter, figure out how it works and play with my car some more. Don't get me wrong, I love my supra, but I guess after you reach some level with mods I guess you have to be very intimate with your car and I'm no where near that level. I wouldn't recommend any piggyback/standalone to someone like myself if they don't have the time to play with it and to be honest if I had known it was going to be this tricky for a noob like me I probably would have went a different direction somehow.
Anyhow I'm determined to figure all this out because at the end of the day I love my supra, I love the potential of the maftpro and I'm very happy dr j and bob are offering excellent support
So again thanks for the help and I'll bump this thread with anymore questions i have when I hit my next hurdle!
plus i always feel like i'm gonna screw something up and figure it's cheaper to have someone fix it for me then for me to blow it up and do everything 2-3x. As some of you know, I'm a jeweler, I'm not a mechanic but I'm determined to learn. Anyhow I'm going to go to Sears and by myself a nice voltmeter, figure out how it works and play with my car some more. Don't get me wrong, I love my supra, but I guess after you reach some level with mods I guess you have to be very intimate with your car and I'm no where near that level. I wouldn't recommend any piggyback/standalone to someone like myself if they don't have the time to play with it and to be honest if I had known it was going to be this tricky for a noob like me I probably would have went a different direction somehow.
Anyhow I'm determined to figure all this out because at the end of the day I love my supra, I love the potential of the maftpro and I'm very happy dr j and bob are offering excellent support
So again thanks for the help and I'll bump this thread with anymore questions i have when I hit my next hurdle!
I wired my WB according to it's instructions (to a isolated ground on the body). I then tapped the Pro purple wire (pin 2 on the 10 pin harness) to the WB ground wire (about 2 inches from the actual gauge) as stated in the instructions on page 21 ("...connect to the wideband main ground, close to the unit"..tookwik4u89 said:
Sooooo, are we saying that the WB ground should NOT go to the body at all but only to the purple wire on the Pro.
You should have 2 wires, a + & - from the gauge to the wideband controller, That minus should NOT contact body ground, same when you wire the maft pro, the two wire should go directly to wideband controller, NOT body ground. The wideband controller and maft pro should only have ground to body for powering up unit, not in gauge circuit. Purple wire = NOT grounded to body. The wire you hooked up to body is powering up unit, you need to tap into gauge wiring, I assume your gauge just plugs into controller, find out which is -, and tap purple in there.chriso said:
ALSO, depending what you have, my dynojet had an aux output pos and neg, so I did not tap into gauge wire, I had seperate wires going to maft pro. Plus you have probably + and - in gauge harness for illumination so make sure you get the right one.
The AEM UEGO has four wires other than the plug from the O2 sensor.tookwik4u89 said:
1. Red: 12V Power
2. Black: Chassis Ground
3. White: 0-5V Output
4. Blue: Serial Output
So AEM Black goes to Pro Purple and the AEM White goes to Pro Orange which is what I have right now, except the AEM Black is also going to chassis ground. I will disconnect the chassis ground and see what happens.
I am slightly lost here. The orange wire of the maft goes to the brown on the lc1. The purple wire on the maft goes to the green on the lc1. Neither of these should have a chassis ground. Is this correct? Then the white and blue wires of the lc1 are grounded to the chassis.
no problem, i'd interested in getting confirmation of how the AEM Uego wires get hooked up as well
Alrighty then....I just unhooked the chassis ground and connected the MAFT Pro purple wire to the AEM Black wire and the WB would not power up. Soooo this will NOT work.born2drv said:no problem, i'd interested in getting confirmation of how the AEM Uego wires get hooked up as well
Seems Aem eugo does work with purple wire to body ground for chriso, Its different than my dynojet setup.
