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  1. #1
    Sr. Apprentice
    Join Date
    Sep 2008
    Quad Cities USA

    Thumbs down Superchips Cortex

    I bought a Superchips Cortex about a week ago. I downloaded the software and updated it as soon as I got it, and installed it onto my truck. I had read on the website where they estimated a 12HP and 15Torque increase on the 4.8L V-8, and had read countless testimonials on several websites stating that the cortex was amazing. I used the built it 1/4 mile timer on the cortex to record my data. Stock tune on 91 octane gas: 17.33@85. I thought it was slow, not THAT slow, but it is what it is. I installed the "performance" mode and increased my shift firmness and ran a blistering 17.33@87. My 60' decreased by .2 using the same launching techniques, and beleive me, there was no wheelspin. There were some things I liked about this programmer: The 1/4 mile feature was cool, and it gave you all the incremental times and MPH. It can monitor a lot of engine data: TPS, Air Inlet Temp, Engine Load, and many more. I bought it to correct my speedo once I get my 4.10's installed and for a little power gain. I am sending it back, and am considering the Bullydog Power Pup or the SCT. Don't get me wrong, I'm not expecting Diesel type power gains, but I don't think a tenth or two is too much to expect for $350.
    2005 Silverado 1500 LS Z71. Extended Cab Shortbed. L33 5.3, 4.10.

    Coming Upgrades:
    Volant CAI
    Magnaflow 3" Single Cat-Back
    Superchips Cortex

  2. #2
    Jr. Mechanic bcoffman's Avatar
    Join Date
    May 2009
    Shippensburg, Pa


    I had a superchip in my deisel that i sold and got rid of it for a tuner specifically design for my truck and the upgrades. The new tuner was more powerful on the lowest setting than the superchip was on high performance setting. and when I switched the new one to 140hp gain wow!!

    B. :glasses:

    1989 V1500 Suburban
    2001 Olds Silouette
    1999 chevy malibu
    1990 F**d E150 van
    2007 30ft gulfstream travel trailer

  3. #3


    That is one reason why you're usually better off going with a custom tune. They're usually cheaper and they're for your specific vehicle. That's just what I've seen.


    The fool learns not from the wise man, but the wise man from the fool.

    2004 Silverado 4x4 (Suzie)
    6" Fabtech Suspension Lift
    35" NITTO Terra Grapplers
    18" MB Wheels Predators
    Thrush Turbo Series Mufflers
    on true dual exhaust
    Grille by Option Racing

    1952 3600
    Finally getting torn down to the frame.

  4. #4
    Sr. Apprentice
    Join Date
    Sep 2008
    Quad Cities USA


    If I get a tune from Blackbear or Nelson how do I know what my A/F ratio is short of going to a dyno? With a specific tune, how do you get your truck back to stock for warranty work? The only guy I would trust to tune my truck is 3 hours away, and I really don't want to go through all that hassle. Those are my concerns with a custom tune.

  5. #5


    So just curious on an 08 silverado z71 with a tune how much HP TQ can be gained from it?
    2009 Chevy Cobalt SS Turbocharged
    2008 Chevy Silverado 1500 Z71 Victory red
    (5.3L fuel managment, 3.73 gears with locking diff.)
    2008 Yamha Rhino 450

  6. #6


    Hey man I had the same problem with my cortex and that is why I dont have it any more. I was around low 15s with the 4.8 tho. I went with wait4meperformance and got the sct hand held and let me tell you. You better hold on even with the low setting. It will spank the superchips performance setting bad.
    08 silverado
    K&N cai
    single in dual out cherry bomb pro
    leveling kit
    custom painted bow ties
    Bed liner
    Tinted windows
    20inch Cruser Alloy Switchblades
    Goodyear Eagle GT2 285/50/20
    1 truly heavy foot + Wait4meperformance SCT Handheld
    100 shot of Nitrous Dyno tune system
    SS front bumper
    Matching painted front grill and bow ties

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