I got a deal I couldn't let down on a used Cattman Y/Random Tech High Flow Cat/2 o2 sensors. The only thing is that the flex section on my cattman is much larger than the one shown on their website.

Please help me determine the difference as I am 99% mine is a Cattman because it is stamped "Cattman Performance" right near the cat bolts. Here are the pics:

Mine:



Cattman's Webpage:

 

I would just call Brian Catts in the morning. I just talked to him last week b/c I just ordered my y-pipe. It's probably just an older version.

 

mine looks like the top one that i got from cattman a year ago

 

Wait...where did you say "cattman" was stamped? I just bought one from the classifieds and it doesnt have any distiguishing marks. Did everybodys have that stamp?

 

Brian had some problems with the flex joints and he probably went with a different type,

 

The thing that really pisses me off is that the seller first claimed it was used for 3 months, then I called his BS and he claimed he had it installed last December. I think I am going to call Brian later today and ask him how old it actually is.

 

Well...they are SS and although he may have misinformed you, from what I hear, Cattman is the best. So, a couple extra months use shouldnt be a problem.

 

I got my answer that I asked a lil bit higher up in this thread. Got it straight from Brian at Cattman and figured I would share in case somebody searches this thread later down the road wanting the same info:

"Sure, there are a number of characteristics that you'll only find on Cattman y-pipes, but some are easier to describe than others. A more obvious difference would be the collector design. The Cattman Y is a merge collector, where each of the downpipes are mitre-cut so they merge together gradually and then they narrow to the same diameter as the rear tube (w/ the flex in it), and it welds on there. This design minimizes turbulance and back pressure to maximize performance, but is much more expensive to manufacture.

Most, if not all, other y-pipes use a swaged collector, where the two downpipes are cut off square, then welded side-by-side into the collector, a section of thick-walled tubing that's been stretched (swaged is the correct term) into an oval on one end (where the downpipes are welded in), and the other smaller/circular end is welded to the rear tube (w/ the flex). This design generates excessive turbulance as the gasses are dumped into the small chamber at the entry to the swaged tube, then abruptly forced by backpressure from a larger volume through the smaller outlet.

Anyway, if you're still unsure, feel free to send a picture via email or PM. Take one of the entire y-pipe so I can make sure you have the right version and perhaps a close-up of the collector.

Brian"