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Old 11-25-2012, 08:17 PM   #1
shame_16
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Member#: 227690
Join Date: Oct 2009
Default STI swap into Baja. Help!

I have a 06 Baja and installed STI TMIC, VF43 and 04 STI Ecu. Engine barely idles and runs rough. The A/F (oxygen sensor) readings are at 3.8v and higher. Im reading -120ma at the ecu. Also the short term fuel trims are maxed out at +25 which im pretty sure means its running very lean. I do not have access to the ECU pinout on my Baja ecu. With the Baja ecu in it idles fine and I can at least drive it. The oxygen sensor reading with the Baja ecu are within the normal ranges. I currently have my Baja ecu installed so i can limp the car around. Is there a difference betweens the pinouts or is there a difference in O2
sensors? Thanks
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Old 11-25-2012, 09:53 PM   #2
lgt2000
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Member#: 140073
Join Date: Feb 2007
Chapter/Region: South East
Location: NC
Vehicle:
2005 LGT
Red

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It sounds like you had a turbo baja with a VF40 and upgraded to the VF43. If that is the case I would keep the Baja ECU, get a wideband and tune for the new turbo
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Old 11-25-2012, 10:09 PM   #3
shame_16
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I'm not opposed to that. Closest reputable tuner is in Atl. I'm in the Florida panhandle. I would like to have this Sti ecu work with it though. At least until I can make a road trip.
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Old 11-26-2012, 01:16 PM   #4
lgt2000
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Member#: 140073
Join Date: Feb 2007
Chapter/Region: South East
Location: NC
Vehicle:
2005 LGT
Red

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I would pick up a tactrix cable and do an email tune to get on the road. I have not compared the ECU pinouts but it may be more work to try and use the STI ECU
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Old 11-26-2012, 07:31 PM   #5
shame_16
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How would I go about getting an email tune?
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