I'm installing a JDM 4into1 header on my 2000 LS/Vtec powered integra. And I am using a stock type r b pipe and muffler. My question is how long does the test pipe have to be between the header collector and b pipe. I'm not using the cat this is for off road use. I want to be able to get the pipe made at the muffler shop so I don't have to drive the beast off the header. I'm sure some of you have had a pipe made and know exact length.

Thanks

 

ttt

 

I have the dimensions..Ill get them a little later. (I have to go into the attic and measure it.

Are you OBDII...will you need the 02 bung???

 

Thanks Chris Yeah I am OBD2 but I won't need the bung. Can I ask how much you paid for yours? And its a 2 1/2 to 2 1/4 right?

 

Anyone else? Please lol

 

Its actually close to 2 1/2 (60MM I think) all the way thorough. I just got a universal 2 1/2 in. 3 hole gasket from the muffler shop and it fit to the stock B-Pipe. Its one hell of a bottle neck, but I dont care for street performance....

I got mine from Godspeed. Cant remember how much.

I will get the length..brb!

 

Thanks again Chris

 

Mine is 17.5 inches long.

 

alright anyone else have the same setup? I would hate to have it made and it's to long or short.

Thanks

 

N0 one else runs a JDM 4into1 on there R with the stock piping?

 

.....well I run a toda racing header to a godspeed test pipe connected to my stock catback. fits fine. Should be the same as the jdm header.

 

I have a Spoon header and Godspeed special test pipe. I'm not sure of the exact lenght of the test pipe. I measured the stock cat. converter and it is 17 1/2". If I remember correctly the test pipe was the same lenght as the stock cat.conv.

 

YUP.

 

yup.

 

16 5/8" is the length (from flange edge to falnge edge) of the test pipe in my garage.

Used with a stock cat back (ITR) and JDM 4 into 1 header on my DC2-R

Will
-who used the test pipe once

 

Yeh, what he said.

I actually build the test pipes and cats to about 16-7/8". But that is measured from the B pipe flange to the flat surface of the donut, it's a little more accurate to set the length this way then measuring from the flare end of the cat/test pipe since the flare can vary.

 

Thanks again for all the help!