Is it bad that I’m getting worst miles per gallon with a cold air intake then the factory intake.... 2008 Hyundai tiburon GT v6
You won't gain anything. Your car will be in constant open loop mode without the MAF and your AFR will be all over the place. The MAF is a very important part of the AFR calculations to deliver the right amount of fuel. Without it, you'll dump too much fuel and lose MPG.