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    Results 1 to 5 of 5
    1. #1
      Join Date
      Aug 2018
      Location
      Orange County, CA
      Posts
      4

      Running too lean....

      I just Dyno'd my car to get a baseline. The shop noticed my car was running to lean and didn't want to take it over 5500 rpm (Red line is 7k). When I get a chance to tune it, hopefully they will fix the issue. In the meantime, I'd just like to have a better idea of what may be causing the issue. It has enough fuel pressure and I believe the O2 and MAF is okay. Any thoughts?



    2. #2
      Join Date
      Oct 2014
      Location
      DFW, Texas
      Posts
      422
      Country Flag: United States
      ...What is controlling it? What changes have been made to it? Was it well tuned before and no longer isn't? What was the AFR? What did the o2 correction look like, is that turned on? Does your o2 agree with the dyno's o2 reading? Got a datalog?

      There's a very large amount of information from this thread if you are seeking directional feedback. A video of it spinning the rollers doesn't tell me anything other than it runs..
      1972 Plymouth 'Cuda - Not LS-swapped, 5.7L Hemi [MS3 Gold Box], T56 Magnum 6-speed - 'Cuda Build Page
      1976 Dodge D100 - Warlock
      2016 Subaru WRX - E30 Tune

    3. #3
      Join Date
      Apr 2001
      Location
      Central CA USA
      Posts
      6,108
      Country Flag: United States
      On ours, the MAF had to be tuned/calibrated to the size of the inlet tube. It was underestimating air flow. I imagine this is a pretty common issue when aftermarket air inlet systems are used
      67 Camaro RS that will be faster than anything Mary owns.

    4. #4
      Join Date
      Apr 2001
      Location
      The City of Fountains
      Posts
      15,971
      Country Flag: United States
      I hear turbos....it needs to be tuned! What ECU are you using?

      Andrew
      1970 GTO Version 3.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    5. #5
      Join Date
      Aug 2018
      Location
      Orange County, CA
      Posts
      4

      Got it tuned

      Got my Camaro tuned, it runs like a champ now. thanks for the replies. They added more fuel and backed out the timing a bit.
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