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Installed Walbro, injectors, 02 housing...lumpy idle??

Old Jun 10, 2007 | 12:25 AM
  #1  
JDMevoBOOST's Avatar
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Installed Walbro, injectors, 02 housing...lumpy idle??

Well my idle appears fine according to my tach....no fluctuations....but it's pulsing at idle....not quite like a cammed car, but similar.....anyone else notice the same thing after installing these parts???

Trying to figure out if the install went ok or if its just a side effect that happens
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Old Jun 10, 2007 | 05:04 AM
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Did you reflash the ECU for the bigger injectors? do you have an AFR meter?
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Old Jun 10, 2007 | 06:44 AM
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When I installed larger injectors in my car it ran lean at idle causing it to idle very rough. After changing a few settings and getting the a/f's down to ideal level the idle smoothed out, but still sounded like it lopes more.
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Old Jun 10, 2007 | 09:04 AM
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Originally Posted by JDMevoBOOST
Well my idle appears fine according to my tach....no fluctuations....but it's pulsing at idle....not quite like a cammed car, but similar.....anyone else notice the same thing after installing these parts???
Trying to figure out if the install went ok or if its just a side effect that happens
What size injectors did you install? You need to have your ECU rescaled to control the larger injectors. Otherwise they´re dumping too much fuel at idle. Anyone local to you in the Bay Area with ECUFlash software can rescale your injectors in five minutes time.
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