Already have the crossover tube. Did that long time ago cause the ****** thing kept shutting off at idle. I think Dinqua suggested it to me about 2 years ago and has worked great ever since. I just replaced that hose today actually cause that one likes to get all sticky and crummy after about 6 months. I took out the two shims and noticed a slight improvement. I still think I need a balance and will continue to replace the squirrel condoms, even though they check out fine.