98 chevy 4x4 with 5.7 vortec

[98chevy4x4]

Do chips or programmers help these models really and if they do what kind is the best or what do yall have on yalls truck?

 

[Fleeingpepper]

A Blackbear tune is generally considered the best, but it's expensive. Google that bad boy and find their site.

 

[Butch]

A custom PCM tune is best for any vehicle but I only take my motors to those that I know have countless ours tuning and for 5.7 vortechs and newer GM truck motors thats Blackbear. Every motor is different no matter what and that only becomes more evident with every oil change and every mile put on it and the mass production chips/programmers are not to address the specific strengths and weaknesses of your individual motor.

Blackbear site... (If your lucky there will be a tune session in your area and have Justin tune your truck in person)
http://blackbearperformance.com/