This is the ultimate tuner for those who have headers, and want dyno tune like results!

Looking for the most powerful PCM-tuning tool on the market? Unlike typical off-the-shelf programmers, the 2005-06 GTO DiabloSport II by SLP comes armed with two ultra-hot custom tunes (replacing the Standard Diablo Performance Tune) developed specifically for your LS2 GTO, which includes the popular 421 and 455 Bobcat packages. Through extensive testing on our in-house dynamometer, our engineers were able to determine the precise levels of spark and fuel required to achieve optimal horsepower and torque at each rpm increment. As an added bonus, the 455 Bobcat tune when loaded, automatically turns off the 02 sensor codes for GTO's equipped with long tube headers and high flow catalytic converters. Eliminating the annoying check engine light.

In addition to its dyno-proven performance programming, this portable, easy-to-use unit allows you to fine-tune a wide range of computer-controlled power-train functions for maximum power and drivability. Each custom program has ignition timing and fuel is optimized for each package, allowing you to plug in the tune, download the tune, and more-all in minutes and at the touch of a button.

If your vehicle is not equipped with all parts included in each Bobcat package, do not worry, the tunes will still provide industry leading power gains. If your vehicle is equipped with any bolt-on parts less full length headers use the 421 Bobcat tune. If your vehicle is equipped with any bolt-on part plus long tube headers use the 455 Bobcat tune.

Free PC Interface Kit Included!