ECUX logs, feedback please
11-14-2006, 09:19 PM
#1
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ECUX logs, feedback please
made my first logs tonight.
mbc set very low and in parallel with n75, no tcd (will install later), 85mm asp maf, straight k04s, 38lbs siemens injectors, 5bar fpr, darintake box with awe sflo and itg inside, piggies, stock intercoolers, 93 octane, 57 degrees ambient.
really low mafs, tons of cf, and horrible o2s.
im on giac k03 x code, with the only lemmiwink tweak being 11 percent primary fueling pulled.
this was my most stable run of 4, one had real bad throttle cut.
<img src="http://i98.photobucket.com/albums/l279/gnosup4u/ecux%20logs%20111406/graphedTypical-11-14-2006_11-02-36_.gif">
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mbc set very low and in parallel with n75, no tcd (will install later), 85mm asp maf, straight k04s, 38lbs siemens injectors, 5bar fpr, darintake box with awe sflo and itg inside, piggies, stock intercoolers, 93 octane, 57 degrees ambient.
really low mafs, tons of cf, and horrible o2s.
im on giac k03 x code, with the only lemmiwink tweak being 11 percent primary fueling pulled.
this was my most stable run of 4, one had real bad throttle cut.
<img src="http://i98.photobucket.com/albums/l279/gnosup4u/ecux%20logs%20111406/graphedTypical-11-14-2006_11-02-36_.gif">
<img src="http://i98.photobucket.com/albums/l279/gnosup4u/ecux%20logs%20111406/graphedTypical-11-14-2006_11-02--1.gif">
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11-14-2006, 09:25 PM
#2
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why are you running such low boost? With an 85mm MAF you're probably not
getting out of closed-loop early enough. Why not run MBC only & crank up the boost to at least 18-20 psi or so?
If anything I'd expect that open element to give inflated MAF readings and cause you to run rich..which you aren't. But that can probably be attributed to the low boost & scaled MAF values due to the 85mm housing.
If anything I'd expect that open element to give inflated MAF readings and cause you to run rich..which you aren't. But that can probably be attributed to the low boost & scaled MAF values due to the 85mm housing.
11-14-2006, 09:29 PM
#4
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because im a chicken **** and have been running it low until i logged
to make sure nothing was horribly wrong that would result in me buying another engine after 1 month on this one 
higher boost, higher maf readings, leads to open loop and better timing... and maybe o2s that make sense? *end yoda*
higher boost, higher maf readings, leads to open loop and better timing... and maybe o2s that make sense? *end yoda*
11-14-2006, 09:31 PM
#5
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That's my guess. I don't have any personal experience with this so take it with a grain of salt
But if you want to run a conservative first tune, run MBC only at 19-20 psi or so...and it will naturally taper to 17-18 or so by redline.
By being too conservative with a big MAF, you're just causing problems. I recall JasonS4 said he tried to turn down boost for a track event (~17 psi ) but had problems because he wasn't leaving closed-loop in time. He was also running an 85mm MAF.
By being too conservative with a big MAF, you're just causing problems. I recall JasonS4 said he tried to turn down boost for a track event (~17 psi ) but had problems because he wasn't leaving closed-loop in time. He was also running an 85mm MAF.
11-14-2006, 09:56 PM
#6
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MAF is way low, that would also contribute to very lean 02s. Try unplugging ecu overnite, if MAF
doesn't improve check sensor or try stock airbox. Add about 10% fuel and crank boost to 22psi.
11-14-2006, 10:05 PM
#7
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adding 10 percent fuel is interesting to me as a suggestion.... more
with NO lemmiwinks i was getting instant cels for running too rich. this was right after installation and i knew id run rich. i pulled 10 percent as recommended by psmalls *may god rest his soul* since hes on the same maf and injectors, so putting back 10 would lead me to believe id start getting rich cels again.
HOWEVER i also pulled back the boost to where it is now since my boost gauge was fried and i had no idea where i was at. thats been fixed.
so... add boost. add a bit of fuel. maybe more maf leads to some better o2 readings too? im thinking a full turn to go from 16 to 20 psi and change lemmi from the 11 percent pulled now to around 5 percent and relog....
HOWEVER i also pulled back the boost to where it is now since my boost gauge was fried and i had no idea where i was at. thats been fixed.
so... add boost. add a bit of fuel. maybe more maf leads to some better o2 readings too? im thinking a full turn to go from 16 to 20 psi and change lemmi from the 11 percent pulled now to around 5 percent and relog....
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11-14-2006, 10:06 PM
#8
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First you need to figure out why are you getting throttle cut, i dont see any reason why
since you actual boost is right onpar with request!
second if you can get that fixed, install TCD and convert your mbc from parallel to alone, turn that biatch up to 22psi spike if you have aftermarket IC, if you have stock IC 20psi spike taper to 18, then log again and post please
second if you can get that fixed, install TCD and convert your mbc from parallel to alone, turn that biatch up to 22psi spike if you have aftermarket IC, if you have stock IC 20psi spike taper to 18, then log again and post please
11-14-2006, 10:18 PM
#9
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heres the only run of 4 that i saw throttle cut
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