DIY TURBO LOW-BUCK MODS FOR BOOST. Do you gap before Takin' That Fool to Gapple Bees. Gaptize a Junkyard Turbo Motor? What is ring gap, why is it important and why do you increase when running boost? Do Junkyard motors need extra ring gap? Can you just boost and FULL SEND? Ring Gap-What it is, When and Why You Need it. Naturally we also cover how much you might need.