Reviewed By David A (GARDENDALE, AL) Reviewed for a 2007 Chevy Tahoe —1/6/2015 3:33 AM
I have on tried the 87 tune. You can tell a difference in power but not a lot of savings on fuel.
Reviewed By Jose C (Lawndale, CA) Reviewed for a 2007 Chevy Tahoe —4/29/2009 9:22 PM
I love the CORTEX I installed it in my 07 TAHOE I currently have dual MAGNAFLOW and the K&N cold air and AIR RAID throtle body spacer and still felt I needed some more. My wife and I noticed the difference like right now, I did hear some ringing from the engine but went away after a couple of days. The only down fall is that all of my PC's @ home are APPLE and I am unavailable to update the programer. I have e-mailed SUPERCHIPS and have yet to hear from them. I still recommend the CORTEX to any one. I just order one more for my wife's 03 DENALI.
Reviewed By KEITH H (PHILADELPHIA, PA) Reviewed for a 2003 Chevy Tahoe —6/10/2012 8:50 AM
This works great.Instant noticable difference.Love the flexibilty for vehicle configuration(CAI,Modded Tranny, Catback).LOVED raising the 100 M.P.H. speed limit governor. Shifts firmer. Much better throttle response. Only issue I had was a few connictivity issues to my phone (Motorola Atrix)but once I went on Superchips forum I found the solution. I'm glad I waited until Superchips released the LinQ and didn't order the entire Vivid Paq with the Archos that's great for people without Anroid devices.Good to see that a manufacturer thought about Android users before iPhone/iPad users.