I put in on the car yeasterday....wow did it improve throttle response and Idle quality, Im running it with a cai and it idles better than with the stocker. No issues what so ever....It also pulls alittle harder in the top-end and car feel alittle quicker It feel like in pull harder in the upper rpms and top-end(65mph and above)....it was a great addition to my mod list with some little gains that were noticeable. I cant wait to do the Intake manifold to complete my intake, that will go good with the full exhaust I have now...Im very pleased with the c&L maf meter, great buy.