To let in a bit more air, we called up Granatelli Motorsports and ordered one of their 85mm MAFs (PN 350330, $255). As you can see, it’s quite a bit bigger than the 72mm stocker. It also came with the harness to adapt it to our LS1 wiring. Getting the larger MAF to slide into our existing air intake took a heat gun, some lube, and a lot of effort, but it fit. Don’t be tempted to remove the mesh screen from the MAF, it’s there to straighten the air, which is really important given the Camaro’s short air intake tract.