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  1. Join Date
    Oct 2002
    Posts
    29,354
    #4
    The 5 degrees advance might be too much for the grade of gasoline you are using.

    My SR20 gained a few more HP when advanced. I am using Shell V-Power. I lost power when I used Petron's high octane equivalent.

    Last dyno test, power out was at 152hp at the wheels with alcohol injection running.
    Last edited by ghosthunter; April 25th, 2009 at 12:48 PM.

Problem after tune up