a few days ago i purchased a jdm itr 4-1 for my itr, much better then the dc 4-1 that was on it when i bought i i hope. what do i need to do to get this thing up and running. if i bought a carsound 2.5, spoon b-pipe and axel back would it all bolt up. thanks

 

2.5 donut

 

Here's what I did: Go to your local Honda dealer and get an S2000 donut gasket. Ordered a T1R test pipe from aj-racing.com. Got a O2 simulator, and off I go. Pefect fit on the test pipe BTW.

But I got tired of smelling like a truck, polluting the environment, and holding my breath anytime cops were nearby so i ordered a Carsound cat from hybridgarage.com. You can order it with the flanges already on and in different lengths so you can either get a JDM/USDM length depending on what b-pipe you want to run down the road. Also need longer spring bolts and outlet gasket for the Carsound, the T1R test pipe uses the stock spring bolts and comes with a new outlet gasket.

 

cool, thanks guys

 

if you cant get it at the dealership go to jdmhondaparts.com they have one i believe.