player
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« on: July 29, 2013, 03:44:46 PM »
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hy there! i have an audi TT 1.8T ajq 180hp and the ecu got toasted(8n0906018A)..so i upgraded to wideband ecu and lambda(06a906032HN)...coded out the vvt ,n112 and the rear o2,.BUT!got very bad idle stft and LTFT...10 stft and 25 ltft...and high inj time..
got the p1128 FUEL TRIM Bank 1(mult) :system too lean and the p1136 FUEL TRIM Bank 1(add) :system too lean
NEXT I adjusted the MAF maps from my A-tune TO my 032HN ecu(kfkhfm mlhfm)also the tvub, krkte,but left the FKKVS ALL 1 .but still..7.9stft and 23ltft...i also made some logs...if someone is willing to help...i would appreciate!
thanks in advance!
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player
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« Reply #1 on: July 29, 2013, 03:51:54 PM »
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Forgot to mention...NO LEAKS....
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Carsinc
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« Reply #2 on: July 29, 2013, 08:40:28 PM »
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Did you change to a wide band MAF? If not thats the problem.
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player
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« Reply #3 on: July 30, 2013, 06:41:13 AM »
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no..the maf is 06a 906 461C...but i copied the (MLHFM) Linearization of MAF voltage and the (KFKHFM) Maf sensor correction by load and RPM from my 8n0906018A to 06a906032HN ecu...
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player
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« Reply #4 on: July 30, 2013, 08:57:08 AM »
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even if i unplug the maf...the same trims and inj time i get...
nobody knows?
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Carsinc
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« Reply #5 on: July 30, 2013, 06:12:58 PM »
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I can't explain why the trims go bad with the maf unplugged.
But the wide band cars use a different maf than narrowband.
I've ran into this with TT. Do a little research about with maf you need.
IF the part # on the sensor itself bosch# not vw ends in 040 its narrow band 049
is wide band. Try a windband maf and let it adpt.
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player
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« Reply #6 on: July 31, 2013, 03:19:34 AM »
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that i understood..but why the same behaviour even with the maf unplugged...?!
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player
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« Reply #7 on: July 31, 2013, 03:21:29 AM »
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also..block 033 (pre-cat o2 sensor) ...only fluctuates for 3-4 sec after i reset the trims...it goes -1.6 1 ...and after a few seconds it goes between 18% - 22% and stays there....maybe it's something related to this?!
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IamwhoIam
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« Reply #8 on: July 31, 2013, 08:05:08 AM »
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Are you 1000000% sure that the car is ok hardware-wise?  |
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I have no logs because I have a boost gauge (makes things easier)
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vagenwerk
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« Reply #9 on: July 31, 2013, 11:45:53 AM »
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try leaving tvub stock  |
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player
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« Reply #10 on: August 01, 2013, 07:28:30 PM »
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same results...even with stock TVUB...
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IamwhoIam
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« Reply #11 on: August 02, 2013, 06:05:19 AM »
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Are you 1000000% sure that the car is ok hardware-wise ? ? ? ?
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I have no logs because I have a boost gauge (makes things easier)
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player
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« Reply #12 on: August 02, 2013, 12:24:59 PM »
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@IamwhoIam ...what do you mean by hardware - wise?..
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IamwhoIam
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« Reply #13 on: August 02, 2013, 04:05:13 PM »
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Are you 10000% positive that there are no boost/vacuum leaks on the car? that the MAF is recent for instance?
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I have no logs because I have a boost gauge (makes things easier)
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Carsinc
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« Reply #14 on: August 02, 2013, 06:23:42 PM »
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Please try the maf like I have recommended.
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