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    O2 sensor and open loop and Vf

    When the O2 sensor is unplugged, does is go into open loop and Vf goes to zero, or does Vf just go to zero? Been tackling some lean-rich issues. Thinking O2 sensor is way out of whack. Wayne
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    Man, I feel your pain. I have an update With the neo set at no correction--all zero's O2 sensor plugged in idle afrs 16.7-17.1 idle Vf 2.2 O2 sensor plugged in 1500 rpms afrs 13.9-14.2 1500 rpms Vf 2.2 O2 sensor unplugged idle afrs 16.78-17.4 idle Vf 2.2 O2 sensor...
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    I may reset the ecu and zero everything out and try your method, whats your fuel pressure? Thanks for the info, this tuning stuff is kinda hit or miss with the miss getting pretty costly.
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    I think maybe I was impatient in my expecting it to idle correctly quickly. When It was idling lean, the Vf would float between 3.75 and 5, indicating to me if I am correct, the ecu sensing a lean condition and adding fuel, that's why I went ahead and added fuel at idle with the neo, but 12%...
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    UPDATE---------------------------------------------- did these things before I read your post, out in the garage. moved the throttle points to low--69 and high to 70 and put the low setting at 600 rpms back to 0 correction and just sat there and waited for it to finally come back down from...
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    Thanks for the reply. Are you also running the lex 550 safc setup? I will go out right now and try the idea you gave me. Wayne
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    That's what I thought. Did swap in a known working afm, then it went way rich at idle--9.6:1 on my innovative w/b. Put my afm in his and it didn't run right. But I couldn't tune out the rich idle with the safc neo. That's what has me puzzled, or one of the things that has me puzzled. So...
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    Lex-550 settings and problems--Way lean at idle Pig rich under boost

    Car ran great stock--just wanted to put that out there. Now with big turbo and all other doo-dads it is all over the place. (AFR's) With the safc NEO I have to add 12% at idle or it goes crazy lean >17.1. When boost ramps up at a pound or two she stays at about 11.7-12.4, then more...
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    AFM goes to 0 hz intermitently on NEO

    Had my daughter inside looking at neo, no change when I wiggled it.
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    AFM goes to 0 hz intermitently on NEO

    yeah, its plugged in and not broken or frayed.
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    AFM goes to 0 hz intermitently on NEO

    My car has been running strangly. The power isn't smooth. Its like when you are cruising along and the a/c compressor cycles, you get that litttle indication that it kicked on by the ever so slight loss, for lack of a better word, of power. Wondering if the afm is on its way out even...
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    Good drivability, poor performance IMHO

    Fixed the sig. My apologies. I know to help you need to have all the info possible. Wayne
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    Good drivability, poor performance IMHO

    I'm sorry, I have the LIPP AFM housing , and the turbo has maybe 10-12K on it. Thanks Wayne
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    Good drivability, poor performance IMHO

    Yeah, thought about mentioning that after I sent it. But to answer your question, yes, I have Supra Sport 2 1/2 inch hard pipe kit and silicone couplers with T bolt clamps. Thanks for responding. Wayne
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    Good drivability, poor performance IMHO

    My 91 turbo 7m has fair to good drivability manners but isn't pulling under boost like it should. Boss 550 4.5 GTS 60-1 DBB turbo 3 inch exhaust 2 1/2 hard pipes Driftmotion intercooler AFC Neo Areomotive FPR @ 30 psi with vacuum plugged in RC 550's Walbro 255 This thing seems...
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    Polyurethane subframe bushings for the MA70 Supra

    I will in for a set of those. Wayne
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    TX2K7... Post up all your pics and vids...

    Oh no Johnny D.---the pleasure was all mine. Enjoyed putting faces with names. Look to see you all in Austin. Wayne
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    Oil Drain Plug

    Like .80 cents from Jeff at Champion Toyota. Wayne
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    black smoke

    Sounds like you're running rich, most mkIII's seem to do this naturally, mine does. Is this car all stock, no aftermarket fpr or other mods? Wayne