Not sure which 1999 Chevy Monte Carlo In-Line Modules are right for you? We have over 1502 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I think that this product speaks for it's self. It improved performance and acceleration. Also you can tell the difference at top end. Jet chip helped make highway driving interesting again. I just need them to make more parts for my car." —Gerald A from Laveen, AZ bought a Jet Performance Module for a 1999 Chevy Monte Carlo, 3.1L V6.