ECU Reset after installing a mod
#1
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Team ScioNRG
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Join Date: May 2005
Location: Philly, PA/Boston, MA
Posts: 154
ECU Reset after installing a mod
How many of you reset your ECU after installing a power mod?
I know many of you still reset your ECU because of the CEL after installing headers.
I am just curious to see who are the real car people here
I know many of you still reset your ECU because of the CEL after installing headers.
I am just curious to see who are the real car people here
#2
I have never reset my ECU after installing a mod (header, CAI, S-Pipe, etc). I have not had a CEL come on at any time and noticed no issues with the car running incorrectly. I have disconnected the battery for extended periods for other reasons and did not notice a performance difference after the ECU was "reset".
#4
Originally Posted by Frisk00Azn
It doesnt really matter if your light comes on.
reseting the ecu makes it easier for the ecu to adjust to new modifications that involve sensors
#5
The only real thought i had after reading this topic was nearly every mod I have every made to both of my cars envolved disconecting the negative battery terminal prior to installation. (not that I ever did) But it kinda sheads light on to why. Intresting.
#7
I reset the ECU once, and quite frankly, I felt much slower for about 3 weeks.
This was confirmed by a horrendus track performance, both E.T. and MPH wise.
I don't see myself resetting the ECU ever again. I have a OBDII scan tool if a CEL ever arises, and you should too. $50 at walmart.
This was confirmed by a horrendus track performance, both E.T. and MPH wise.
I don't see myself resetting the ECU ever again. I have a OBDII scan tool if a CEL ever arises, and you should too. $50 at walmart.
#8
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Scion Evolution
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Location: Chicago Area
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I am still throwing a CEL from the first o2 sensor due to the Alphawerks header I installed. I tried the MMW CEL adaptor and still throwing a CEL. Last night I switch from the MMW to a spark plug style adaptor which everyone on here said was a sure fix. The car is running a lot better then the MMW, but I am still throwing a CEL. I tried reseting with pulling the negative teriminal, and I had my buddy who is a mechanic try to clear it with the obd 2 scanner, and it is still coming back in like 2 minutes after reseting it????
I need to know what others are doing to fix this? Never had this many issues wit a header!!!!
I need to know what others are doing to fix this? Never had this many issues wit a header!!!!
#9
If it's coming back in 2 minutes, then it's most likely something other than the O2 receptor.. I'd pull the code and see what it is.
You may have a damaged sensor as well.... it's so hard to say.
You may have a damaged sensor as well.... it's so hard to say.
#10
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Location: Chicago Area
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the code is for the first 02 sensor, (I think it ended with 031) but most people have the same code when you swap to an aftermarket header. I was really, really careful with these sensors since I read about all the problems people are having with them. I also don't want to get a new sensor for $200 and it still have the same sort of problem.
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