i'm gonna be making my custom cai
just wondering what pipe diameter i should use
2.5in or 3in?
which is better overall n why?
btw, this is on a d16y8
tia

 

anybody knows the size of the tb on d16y8?
i was told by some garage guys saying 2.5in will be a good size for the single cam
but 3in is better for the twin cam vtec, for the high revs
is that true?

 

I'm almost possitive that it's 2.5 inch

 

cool, thx

 

I usually don't believe a word that "some garage guys" say but I have seen this on a dyno to be 100% true.

later

matt

 

ok, what if i use 3in?
what the downside of that?
losing lots of lowend tq?

 

hey i dont know if this is of any help, but i came across a web site a while back about how some guy built his own CAI intake out of parts from Home Depot. it was a really good job and basically looked just like the AEM unit but for a whole lot less. i belive it was for a B16 but i'm sure you could get some info from it. the only problem is a lost the link a while back. anywone else remember this or know that link??

 

i think i know what u're talking about, n it was on a del sol i think
i lost that link as well...

 

My 95 Ex is 56mm...probably same as 6th gen but i know for a fact that the intake manifolds are different

 

http://teamdelsol.com/howto/coldair/diycoldair.htm

 

yup. that's the one i was thinking of.

 

so anyone know if i use 3in pipe?
what'll happen?

 

dont go too wide cuz it ll slow down the flow of air into the throddle body..a 1/4" wider than the throddle body would be perfect then fit it with the right boot..alot of of muffler shops can help u out if u need piping bent..mandrel prefer d of course