Intercooler piping bov question.

[frosh29]

Hello everyone,

Just a quick question to see if anyone knows the answer off the top of their head.

I was shipped 2.25" intercooler piping with a Greddy bov flange welded onto it. It is about 6 inches total length. This will be in the fmic piping, on the cold side, just before the 3" gm maf.

My intercooler piping is going to be 2.5". I can get the right part cheaply, but I was wondering about the theory of reducing the bov pipe just before the bov. I do not know the effect of reducing or enlarging the piping surrounding the bov so I guess that is what I am asking for information on. I know for a fact that GM maf's behave in different ways depending on the sizes of the couplers directly before the maf (i.e. a 3" coupler with a 3" gm maf is going to read differently than a 3" to 3" coupler to the maf.)

Is there a known effect when reducing (or enlarging) the piping before the bov too? What is it?

Thanks for any input.

-Scott

 

[->PrOjEcTGS<-]

So your piping is going to go 2.5-2.25-3.0-2.5?? I would just cut off the bov flange and have a length of 2.5" piping welded to your IC piping before going into the 3" MAS. Then have the BOV flange rewelded onto the new elongated IC piping.