Ducting for 90mm TB's
 

I am going to run the FAST 90mm intake and TB. Possibly MTI's TB. I also will run a 85mm maf. How will I go about connecting the maf to the tb?

The Home Depot plumbing department will help ya with a quick fix. They must make Fernco's in bigger diameters. Just a thought.

I used the fernco 4" to 3"

I think fast should give you a 90mm maf and plumbing for the cost of this dam TB :D Kinda sucks that you have to spend all that money on a 90mm TB to have it restriced by a smaller maf

Don't use a MAF and you won't be restricted.

Does anyone make a lid with a 90mm opening?

Not yet, but I would assume someone would come out with one sooner or later. TSP has the 85mm lids. You can convert to speed density and get rid of the MAF, but all mods after that will be more touchy in the computer. I think Pro M has a 90mm MAF, but I aint payin $400 for a MAF. :D

fernco 3" -> 4" fits perfectly w/ that combo.

You gonna show us how to do that in HP Tuner? ;)