How can I go from a 2.5 inch pipe to a 1 1/2 inch pipe?

[AN89HATCH]

I am wondering, my old pipe is 2.5 inches, but my dsm intercooler is a 1 1/2 inch piping, I am wondering how can I go from the 2.5inch pipe to a 1 1/2 in pipe?

[WAbernethy]

You can do what I did, more of a temporary solution for me though. I just used a rubber coupling that fit over my smaller pipe and slid it inside the silicone connector and cranked it down tight. I know they sell reducer couplings but I doubt they make them that small. I'm planning on welding some bigger pipes on the IC eventually.

[andrave]

I'd go to autozone and get a tailpipe adaptor from 1.5 to 2.5 and then just use the corresponding size rubber or silicone couplers.

[LongIsland240]

ummm....bottleneck much???