Other posts have confirmed that the Marauder air intake system is the least restrictive Ford has ever offered. A 15-20 HP gain sounds rather fantastic. I've said it again, and I'll say it before: wait for the DR cold air package...THAT will probably give a measurable power increase and be more compatible with his chip...and look & sound way cooler as well.
It's a nice Pro-M meter but nothing that special about it, looks like one of their race 80mm jobs they retail for about $325 flow really well... but his #s for horsepower seem overinflated to me. Very popular meter on the Supercharged Mustangs
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