Injen Intake Pipe Size

[SSJ2Gohan]

I have a 1995 240sx SE.

I ripped the lower resinator box out from the stock airbox already and have an Injen Intake system installed.  Im ready to add the cold air extension but needed to know a couple things.

I want to grab the AEM bypass valve.  Enjuku sells the 3" version.  Is this the same size as the Injen piping for my car?  If so do I need any extra parts that may not be included to install this, such as brackets, garmets, etc?  If so where do I get them or should my local dealership have them.  Thanks!

[Matt240SE]

Im pretty sure in order for the AEM bypass valve to work you would have to modify the tube cause otehrwise it will not fit down the hole cause it will add a coupel inches extra.

Also you really dont need it if you can tell how deep a puddle is or you know where water collects. Therotically the puddle would have to be 2 feet deep i believe, I dont even take my car through a half a foot of water I just turn around.

And some members of this board have said that it doesnt do any good b/c you wont be using the cold extension rather just the bypass valve and taking in the hot air inside the engine bay.