When building a custom intake system for your performance vehicle, you have a lot of options, from tubing material, colors, and routing decisions, to what style of air filters to use. One thing you may not have considered is how to retain the use of your mass air flow sensor. The mass air flow sensor sends air intake data to your vehicle's computer to adjust fuel delivery. If it is not sending accurate data, your fuel ratio will not be accurate, which will cause your vehicle to run poorly, if at all. A mass air flow sensor adapter allows you to integrate your MAF sensor into your custom air intake tubing. This retains its function and assures your ECU receives the information it needs. If you need a custom air intake kit or a mass air flow sensor adapter, check out the performance parts at O'Reilly Auto Parts.