I'm stuck as to what to do about my oem ITR B-pipe. I'm soon to be installing Toda A's with my JDM 4-1 Header and godspeed testpipe. My exhaust is the stock ITR B-pipe and a comptech axle-back. I have a big feeling that the Oem B-pipe is going to be holding me back.

So, any suggestions as to what to do? I was thinking of modding the oem b-pipe, but I've recently found out that there are two restrictions on it and the ID isn't as great as what I thought. Should I go the custom B-pipe route? Anyone sell (or make) just a B-pipe in a larger diameter? Or, I could sell the comptech and get a full exhaust I suppose--maybe somethgn like an Apex'i N1, although I'm not a fan of large tips, but it would allow me to run the insert silencer.

I'm open for suggestions either way.

 

To save money, and since you already have their muffler, call Comptech and ask to purchase their b-pipe, full Stainless Steel, can't be too much, hopefully.
Austin

 

I tried that. SS = ~$350 just for the B pipe.

 

Have a custom one made from mild steel at any muffler shop. All you will need is the 2.5" flanges.

 

I'm afraid that the muffler shop won't have the flanges in stock, so that's why I hesitate.

 

If that's all you're going with, you should be fine with the OEM b-pipe.
OEM b-pipe makes for some killer low end and midrange.

My LS/VTEC was hitting 182 and 133 w/ a stock b-pipe and Toda Spec A cams. Crazy torque band.

 

That's good to know, but I should still probably do the cat flange mod on the oem b-pipe.