Originally posted by Joe Tiano
HOME DEPOT...has a rubber 4"-3" adapter in the plumbing section...i use one for my 4" cold air set up to fit the 3" MAF...its about 6$ ....joe
[/QUOTE
Probably ok to use the rubber adapter on a MAF, but would NOT put one on the compressor inlet. It gets rather hot there, so a good possibility that rubber will be going through your turbo and motor. Get the right stuff the first time, a silicone adapter.