As the title states my brakes work perfect until I do a pull and as soon as I let off I have no brakes but within 1 or 2 seconds they are back and normal. Any ideas why I wouldn't have any brakes for those split seconds?? Scared the s*** out of my the first time haha. Thanks guys.

 

I bet the hose from the brake booster to the intake has no check valve. The oem hoses have one and its very important. Some are external and visible, and some are built into the hose. This will ensure that vacuum is stored in the booster and ready for when you hit the pedal.

 

I will check this out tomorrow. Thanks man