Just saw this...
You mean you bought a new (bigger) intercooler and it didn't come with new pipes?
If that's the case, I'd say you could have bought better. It's already a bit risky to buy an aftermarket part that is "compatible" because some car versions have different placements for some of it's parts...
I bought a fatter intercooler and installed it a couple of days ago. Bought it from eBay for a Golf Mk5 GTi, reportedly wouldn't fit. While installing I noticed the ingress pipe didn't have the right angle, nor width... Lucky for me it's a silicone pipe that I could bend and cut to fit.
But the kit still came with pipes, braces, etc.
Was your intercooler supposed to come with pipes?