New AEM Piggyback (Seems VERY promising)
11-03-2008, 04:59 AM
#461
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Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
for those having some issues and heard about the "resistor trick" but don't know what it is, or if it's legit...here is a direct quote from an admin on the aem forums:
http://forum.aempower.com/forum/inde...,19962.42.html
We have seen a couple of vehicles, including an automatic Scion xB, that had erratic misfires (especially at high load) that would go away if you bypassed the cam or crank signals so they were not intercepted by the FIC. After measuring the signals with an oscilloscope, we could see that the signals were a bit noisy, and the FIC inputs were sensitive enough that they picked up noise and sent an extra cam pulse to the ECU. The solution was to install a 2k ohm resistor with one side connected to Crank MAGI(+) and the other side connected to Crank MAGI(-). Another 2k resistor installed with one side connected to Cam1 MAGI(+) and the other side connected to Cam1 MAGI(-).
11-03-2008, 06:07 PM
#465
Originally Posted by Mr_Meaty
for those having some issues and heard about the "resistor trick" but don't know what it is, or if it's legit...here is a direct quote from an admin on the aem forums:
http://forum.aempower.com/forum/inde...,19962.42.html
We have seen a couple of vehicles, including an automatic Scion xB, that had erratic misfires (especially at high load) that would go away if you bypassed the cam or crank signals so they were not intercepted by the FIC. After measuring the signals with an oscilloscope, we could see that the signals were a bit noisy, and the FIC inputs were sensitive enough that they picked up noise and sent an extra cam pulse to the ECU. The solution was to install a 2k ohm resistor with one side connected to Crank MAGI(+) and the other side connected to Crank MAGI(-). Another 2k resistor installed with one side connected to Cam1 MAGI(+) and the other side connected to Cam1 MAGI(-).
11-03-2008, 06:43 PM
#467
Originally Posted by aen
can the ones who got hte harness without the resistor send theirs back to get the new one?
11-03-2008, 10:21 PM
#468
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Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
ah...so we can send you our harness and you will wire in the resistors for us, as long as we cover shipping both way? NICE!
Do you think you could post a pic of your harness with the resistors in place so we could do this ourselves?
Mine's already done, so it's not for me, but I'm sure many people would benefit from this.
Do you think you could post a pic of your harness with the resistors in place so we could do this ourselves?
Mine's already done, so it's not for me, but I'm sure many people would benefit from this.
11-04-2008, 03:40 AM
#469
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Join Date: Aug 2006
Location: Las Vegas!
Posts: 5,750
Originally Posted by paul_dezod
Originally Posted by aen
can the ones who got hte harness without the resistor send theirs back to get the new one?
11-04-2008, 08:35 AM
#470
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Join Date: Aug 2006
Location: Las Vegas!
Posts: 5,750
i fixed my stalling issue, we were learning about new ecu's and how the fuel injectors work today and i brought up that mine dies alot. blah blah
in any case, they suggested i change injector response time.
WIN. im too tired. maybe tomorrow i'll redo this post.
in any case, they suggested i change injector response time.
WIN. im too tired. maybe tomorrow i'll redo this post.
11-04-2008, 02:17 PM
#471
Are 07 nad up the only tc models having this problem? I am having part throttle surging i am not sure if it has to do with the maf clamp i changed the voltages and still have the same problem. could i just not use the maf map? ,just set the max voltage ?
11-05-2008, 03:30 AM
#473
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Join Date: Feb 2008
Location: Barnesville, PA
Posts: 271
Originally Posted by jjos1
Are 07 nad up the only tc models having this problem? I am having part throttle surging i am not sure if it has to do with the maf clamp i changed the voltages and still have the same problem. could i just not use the maf map? ,just set the max voltage ?
11-05-2008, 04:32 AM
#474
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Join Date: Oct 2007
Location: The First State
Posts: 1,938
Originally Posted by paul_dezod
Originally Posted by Mr_Meaty
for those having some issues and heard about the "resistor trick" but don't know what it is, or if it's legit...here is a direct quote from an admin on the aem forums:
http://forum.aempower.com/forum/inde...,19962.42.html
We have seen a couple of vehicles, including an automatic Scion xB, that had erratic misfires (especially at high load) that would go away if you bypassed the cam or crank signals so they were not intercepted by the FIC. After measuring the signals with an oscilloscope, we could see that the signals were a bit noisy, and the FIC inputs were sensitive enough that they picked up noise and sent an extra cam pulse to the ECU. The solution was to install a 2k ohm resistor with one side connected to Crank MAGI(+) and the other side connected to Crank MAGI(-). Another 2k resistor installed with one side connected to Cam1 MAGI(+) and the other side connected to Cam1 MAGI(-).
11-05-2008, 01:29 PM
#475
Originally Posted by dave2610
Originally Posted by paul_dezod
Originally Posted by Mr_Meaty
for those having some issues and heard about the "resistor trick" but don't know what it is, or if it's legit...here is a direct quote from an admin on the aem forums:
http://forum.aempower.com/forum/inde...,19962.42.html
We have seen a couple of vehicles, including an automatic Scion xB, that had erratic misfires (especially at high load) that would go away if you bypassed the cam or crank signals so they were not intercepted by the FIC. After measuring the signals with an oscilloscope, we could see that the signals were a bit noisy, and the FIC inputs were sensitive enough that they picked up noise and sent an extra cam pulse to the ECU. The solution was to install a 2k ohm resistor with one side connected to Crank MAGI(+) and the other side connected to Crank MAGI(-). Another 2k resistor installed with one side connected to Cam1 MAGI(+) and the other side connected to Cam1 MAGI(-).
11-05-2008, 02:09 PM
#477
Originally Posted by SoFloTC
paul what about the FIC fix for an automatic? any real solution their yet? id love to jump back to fic from this stupid blue... although i did just pickup a dezod blackbox
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