Results 1 to 3 of 3

Thread: Auto tune at high altitude

  1. #1
    Senior Member VortechC5's Avatar
    Join Date
    Jun 2003
    Posts
    141

    Default Auto tune at high altitude

    I am getting ready to go through the autotune process with my now NA Vette. The problem that I see is that I can not create a MAP reading any higher than about 78-80 kPa due to the high altitude here. Should I just to a linear fill for the values between 80 kPa and 105 kPa?
    02 C5 Coupe - LS7, TSP 265 LS7 heads, ARH, Z06 cat-back, HREs, 3.73 gears, Wilwood brakes, DeWitts radiator

    15 C7 Z5 1 Coupe - stock for now

    12 Avalanche - tune, Corsa Touring

  2. #2
    Lifetime Member
    Join Date
    Jul 2005
    Posts
    240

    Default

    What I do is tune to the 85kpa cell copy those values to the 105kpa cells add 5 to 10% and then do a linear fill from the 85kpa cells.

    This is so that when you go to sea level the mixtures richen up.
    I have not yet tested to see what exact increase is needed.
    \"You Can Never Have Enough Horsepower\"

  3. #3
    Senior Member VortechC5's Avatar
    Join Date
    Jun 2003
    Posts
    141

    Default

    I was hoping that you would respond. I knew that you are at high altitude and do alot of tuning.

    What you suggest makes perfect sense to me. That is what I will do as well.

    Mark
    02 C5 Coupe - LS7, TSP 265 LS7 heads, ARH, Z06 cat-back, HREs, 3.73 gears, Wilwood brakes, DeWitts radiator

    15 C7 Z5 1 Coupe - stock for now

    12 Avalanche - tune, Corsa Touring

Similar Threads

  1. tune help, very high idle
    By BROKE in forum Gen III V8 Specific
    Replies: 35
    Last Post: September 15th, 2008, 07:07 AM
  2. High Altitude Tuning
    By WeathermanShawn in forum Gen III V8 Specific
    Replies: 5
    Last Post: July 21st, 2008, 09:17 PM
  3. Auto High Octane Map
    By Gelf VXR in forum General (Petrol, Gas, Ethanol)
    Replies: 7
    Last Post: March 24th, 2008, 03:34 PM
  4. 98 ls1 auto f13 tune help!!!
    By ls698ta in forum Gen III V8 Specific
    Replies: 3
    Last Post: March 15th, 2008, 03:37 AM
  5. idle ltft high after auto tune
    By 69camaro5speed in forum General (Petrol, Gas, Ethanol)
    Replies: 3
    Last Post: February 26th, 2007, 01:29 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •