||Here is the basic problem with the
Courtesy B-Pipe, which I had the header and exhaust experts at KOOKS
Custom Headers in North Bay Shore NY fix. As outlined
previously in the Courtesy B-Pipe Restriction Issue
section, installing a Courtesy B-Pipe on a 99 Maxima (or any 4th-Gen
Maxima without an O2 sensor behind the cat) results in this horrendous
extension piece having to be installed between the B-Pipe and the
catalytic converter. My mission was to eliminate this piece!!!!
||Here is my Maxima on the lift at KOOKS - a
place, incidentally that has more stainless steel than I've seen in my
entire lifetime. How many times have I had this exhaust pulled
apart in a quest for perfection?? I think I'm finally finished!
||My original thought was to have KOOKS
simply replace the wacky extension piece with a straight stainless steel
piece, but their proposed solution was even better. Their idea was
to remove the Courtesy B-Pipe completely, chop the end off, and weld on
an extension piece. Essentially, they would make the Courtesy pipe
what it should have been in the first place. Here is the Courtesy
B-Pipe getting its front section chopped off all the way to the
||Here is the little piece chopped off of the
Courtesy B-Pipe. Bye Bye!
||When my installer, Geno, saw the RT Cat he
looked very displeased with the rotating flanges, and commented that
they did not look like they were making a very good exhaust seal against
my Y-Pipe or my B-Pipe (I was told Geno was a perfectionist). Geno
insisted on taking the cat off, chopping off the rotating flanges and
welding on new permanent flanges which had a totally flat face. I
couldn't stop him! I think he did a really nice job. Compare
this with the original shot of the RT
I emphasize this because this is the difference
between going to a place like Speedy or Midas and going to a real header
shop that employs craftsmen to get the job done. These guys are
worse perfectionists than I am, and I love them for it.
||Once the cat flanges were modified and the
end was cut off the Courtesy B-Pipe it had to be placed back on the car
so that the exact extension length necessary could be measured - right
on the car. It turned out to be between 8 and 9 inches roughly.
||This is the machine they use to cut the
stainless steel to size. Seen here with a very long blank in
preparation for cutting.
||Here is the final length of stainless steel
tubing. KOOKS welded a flange on one end for the catalytic
converter, and welded the other end to the Courtesy B-Pipe at the
||Here is the completed B-Pipe, with the
custom stainless steel extension welded onto the resonator. This
is how the pipe should have looked when I bought it!!
||Here is the completed
work. It is essentially the original Courtesy B-Pipe but extended
an additional 6-inches with no changes in exhaust diameter. If
anyone at Courtesy Nissan is looking at this, please take notes!!
You guys make a great product, but you need to stop making it
generic!! This is what the pipe should look like for Maximas
without the O2 sensor behind the cat. Thanks to the fine craftsmen
Custom Headers in Bay Shore L.I. for doing a fine professional
job. I would recommend them to anyone in the NY, NJ area for any
type of custom exhaust work.
By the way, for those interested - total parts and
labor for this job was $140. In my opinion, more than reasonable!!