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Thread: SN93 tuned with 42lbs

  1. #1
    Junior SCH Member
    Join Date
    Sep 2010
    Posts
    37

    SN93 tuned with 42lbs

    Has anyone had there sn93 tuned with 42lbs injectors. I running 9lbs of boost with my sn93. I was thinking about running 42lbs and a water/meth and getting tuned. If anybody has this setup with or without the meth let me know how your car is running and HP.

  2. #2
    SCH Member
    Join Date
    Dec 2006
    Posts
    76
    decipha just finishing dialing in 42#'s on a stock pullied sn89 in a 88 t-bird 302, gt40 heads, crane 2031, perf rpm, 70mm tb, pro m 60. Using a moates qtr horse, duty cycle is about 80%. load over 100%. Cfm calculated over 600. She's making pretty good power. Same vehicle only difference being another bottom end with same cubes, e7's, stock cam -4 and 30#'s was over 100% duty cycle, 120% load? At just under 3700#'s she went a 13.8x @ 98mph with head gaskets possibley begining to fail.
    She feels faster but the track will tell the tale. We're hoping for a 13.3 or 13.2. Best maf voltage with the old motor peaked at 3.2. New combo 3.3x? Hope to log boost soon, fix aod, and go to 4.10s from 3.73's.
    The 42's are great and should have a little more room with a boost referenced fuel regulator. Iat's are in the 160F range and meth could add 20+hp with a jump of timing from 30 to 36. A good aod valve body, meth and 4.10's might get the fat girl to the 12.9x's.:)

    Hope this helps,
    Mike

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