hey on the d16y7 i think theres a built in cat in the headers, but what about the jspec d15b? because i just swapped motors and im wondering if i have a cat

 

JDM D15B and USDM D16Z6 have a header with an oxygen sensor and a catylitic converter downstream, after the header "B-pipe". So no, the answer is you need to get a cat to remain legal

 

The Y7 does indeed have the cat in the header/exhaust manifold. If you kept the exhaust manifold, then you still have the cat.

 

all i changed was a complete motor swap from a d16y7 to a d15b. so i have a cat built in my exhaust manifold does that make it legal? or do i still have to buy a cat?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ph0shizzle &raquo;</TD></TR><TR><TD CLASS="quote">all i changed was a complete motor swap from a d16y7 to a d15b. so i have a cat built in my exhaust manifold does that make it legal? or do i still have to buy a cat?</TD></TR></TABLE>

If you went to the D15B "complete motor swap" which should include the exhaust manifold, NO, you don't have a cat built into it. Your cat will be AFTER the exhaust manifold.

Where in San Diego did you get this swap, by the way? I wonder if it's mine. I sold a JDM D15B in SD, but that was a few years ago.