If you want to nit pick, then no.

 

Well then, I'm glad I'm a turbo now...

 

. . . .

 

If the Cattman ypipe is designed to "work with their headers" as the group deal says, can I safely assume this will work with them as well (might be a stupid question, but I'm def. getting the headers and want the most out of my exhaust setup).

Joshua

 

The headers from Cattman will be a direct replacement for stock. So either Y-Pipe will work fine with Cattman headers. I would assume the Cattman Y-Pipe might be a bit more snug since the headers are probably being tested against a Cattman Y-Pipe.

 

Thank you sir!

Joshua

 

It obviously depends on the design of the y-pipe, so I wouldn't assume anything at this point until someone officially said something.

 

Both Y-Pipes hookup to stock headers. Why wouldn't it work?

 

I come from the 4th/5th gen, and have seen in the past that the actual header design only supports ITS own y-pipe, i.e. 4th and 5th gen Cattman header design.


It's obvious we don't want the stock design, so hopefully the new headers are 'long tube' vs shorty, and each company would probably have their own design, and that would make it difficult to match up.

 

Wow, the CE and and Cattman y pipe designs are WAYYYY different after seeing pics.

 

The Cattman headers should fit because it's y-pipe fit stock manifold like Hilbe said; but they may bot fit the CE/RL one as well, specifically the equal length part.

 

Obviously the question would then become "Why spend $100 more for a pipe that could be gotten for $100 less (assuming equal HP numbers, which I believe are the same)"

Joshua

 

Also, I think Taz sells metallic core "SPUN" cats in case you ever want to upgrade to a y-pipe with a cat built in.
Kamski

 

If you are talking purely from a point of optimum flow and power potential the cattman piece is superior. Equal length tubes, wider bends, and no crimped section.

I love Joe and his products, it all about what price point you want to hit. Cattman costs more, Racingline costs less. On a stock car is there a huge diff, probably not. It's still a nicer part IMO though.

 

errr...... point for point exact power gain................. what about flow there bro?

The equal lenght tubes are pretty whicked but, what gains do you get out of those? I mean exact same numbers......... what do you say to that?

Here take my extra $100 and we can call it a day.

Kam

 

"nit pick?"

I would think that you would be the same...tuning wise, the AFR wouldn't be accurate, giving you an inaccurate tune...

 

If a tuner has some experience, he should be able to calculate the reading difference between before and after cats. But if it's available, then use it.

 

On a more heavily modded engine I'm sure the improved design would be beneficial. For instance, if you had equal length headers and then an equal length y-pipe. Coming out of the stock manifolds isn't exactly power efficient. Like I said, it's all price points, and on a stock car you'ld be hard pressed to see a difference. But isn't the point not to stay stock for long?

Like I said I like racingline, I've ordered many of their products and talked with Joe. It's a great company that is supporting our community and Joe is a great guy. Better design is better design though.

 

Wouldn't we be talking (with a F/I engine) a few measly hp at best? The flow is greatly improved. I'm building a nitrous engine hence the reason I asked the question.

Joshua

 

i cant say with certanty that 1 cubic milimiter of flow advantage btween the two headers would give you much of a boost in performance unless you were in the over 500HP club..... doubt you'll come to that on a vq35 without redone internals. But if u have the coin to jam into low comp pistons, connecting rods, crank and other stuff.......... power too you..

Me, I'm happy with whatever works for a reasonable price.

Kamski

 

That's the Polski way!

 

So your saying it doesn't really make much difference, 15 HP is 15 HP and will work just as well with the headers. I'll be running a 100 shot with retarded timing and 1 step colder plugs coupled with Utec...nowhere near 500 Hp...

?

Joshua

 

Bottom line, get the y-pipe that will be able to fit aftermarket equal length headers.

 

I think you may have caused a bees nest to get stirred... (referring to different companies, when this thread is only regarding ONE, meaning the OP may not be too happy with you )

 

This board isn't quite like my last one. I hope I didn't cause a problem by trying to draw comparisons between the two y-pipes.

If a mod would like to split this off, I think that would be best then. Maybe "Comparisons of YPipes" or something.

Joshua

 

Well, since they seem to be so similar in dimensions, they should both bolt up, albeit w/ some minor modification.

 

I was thinking this too...

Joshua

 

As said above, if both Cattman and Racingline Ypipes bolt to the stock headers (which they both do), it only makes sense (logically) that the both work with the new Cattman headers.

At least, this makes sense to me...

Joshua

 

For sure, but maybe the Cattman's piping will "flow" a little better, since the manifolds will be "made" for it's own y-pipe?

Someone me if that makes no sense

 

Quick question,

How many cats are on cattmans Y-pipe? 1 or 2?


And if we get the version without the cats, will the exhaust be suffiecient enough to pass emissions?

 

1, and depends on what state... from what i hear.. it WONT pass the tail Sniffer

 

Time for me to chime back in.....

As far as design vs cattmans, I'll be the first to admit, Brians pipe "should" technically flow slightly more, not better. It is a very nice and well engineered piece. That said, concidering the state of tune most cars here are going to see, they are likely to not ever realize the potential of that y pipe. Mainly because 90% of the cars that will buy y pipes will never use anything more than basic bolt ons, while most still just an intake. And that is the reason for my decision to produce the y pipe using the chosen design. It still greatly improves flow over stock and as you can see actually makes slightly better hp than cattmans http://www.6thgenmaxima.org/forums/viewtopic.php?t=2754. And costs less overall to produce.

Emissions....... Yes the ypipe (both mine and brians) will delete the downstream cat, but to the best of my knowledge nobody with a properly running car has ever failed emissions testing so long as the 2 precats are still in place and warmed up. I fact from the numbers I have personnaly seen, overall emissions were barely over normal levels and still within acceptable limits. state to state does vary but from what i have seen passing is not an issue. It is technically illegal to remove a working catalitic converter, I assume this is brians reasoning fro giving an option of adding a metal core cat. I'd very much like to see a dyno of a cattman y pipe with cat becasue even though metal cores are excellent for flow they still add a certain amount of restriction, to pay $500+ for 5hp.........................

Headers..... generally speaking if both y pipes are made to mount to stock headers and cattman headers are made to mount to his y pipe, then BOTH ypipes should fit cattman headers very very little issue if any.

I think thats it for now.

 

Well several years back when their was not a Cattman or Racingline Y-pipe their was a Custom Enterprise Y-pipe (I know I had one) and to my knowledge of the numerious threads when they first came out, those Y's didn't cause any vehicle to my knowledge to fail emmissions either!!!

 

If you retain the stock mufflers and tips, I doubt they will get suspicious and look underneath. But what about engine codes? The pre-cats are retained so I assume the engine will still be happy. I am not as familiar with the Max, but on my truck the 3rd cat can be eliminated no problem. I have hi-flow pre-cats on it with O2 sensors before and after both sides and the computer has never thrown a code. That Y-pipe looks very nice. I took the one off my 96 that was under Katrina's floods for who knows how long and it wasn't that bad so my 07 should be cake. Knock on wood!

 

How was the sound of the pipe?

Joshua

 

First batch only, we learned that lesson quickly (and we've replaced the unlined flexes w/ lined flexes at no charge for everyone who asked). All of our current production uses the highest quality, US-made, lined flex sections available. Price is outrageous, but the flex is the weakest link in a y-pipe and the failure rate is too high in the imported flexes we've tried.

Brian

 

Our upcoming header manifolds for the 04-08 will fit any y-pipe that accurately replaces the stock y-pipe. That doesn't mean you'd want to use them with the stock y-pipe, but it could be done.

Our new 6th gen y-pipe was designed with the headers in mind - that's why the downpipes are equal length, and I'll explain why we went that route.

When we were developing our 95-03 headers, we built a y-pipe that resembled a stock or a regular performance y-pipe (much longer front downpipe than rear downpipe) to see how it would perform compared with equal length downpipes. It made almost as much power as our final (equal length) design, and cost a fair bit less to make, but we had to reject this approach because it sounded terrible with near-equal-length header manifolds. I was too embarassed to drive down the street, and that's not an exaggeration. Just a coarse growl, across the entire rpm spectrum; kept bumping off the redline because the exhaust pitch didn't rise with rpms. We went back immediately to near-equal length header AND y-pipe system; the sound of that combination on the 95-03 Max is unique and very popular.

Since the 6th stock y-pipes (and the CE/Racingline y-pipes) also have assymetric (different length) downpipes, we followed the same strategy with this design since sound is pretty important to most customers. I won't know exactly how our manifolds will sound with other brands of y-pipes until they're completed - and I'll point out that the difference in length between the front and rear downpipes on the 6th gen is less than the 4th/5th gen Maximas, so the negative impact of assymetric downpipes on header tone should be less severe - but I'm confident that due to these and a couple of other features the Cattman header manifolds will sound and perform best with the y-pipe they were designed around.

Brian

 

sooo get the ****ing headers already man and put me 1st on the list lol and if we buy both give some discount because we ain't no benz owners here atleast 7 something hundered for both man ,i would get one 100%

 

racingline why wont you do headers ? since you are not charging too much for a good product , i'm sure every1 will buy from you

 

We are working on the headers. The full system will sell for less than the seperate Y and manifolds, but I do not know that price now. Our policy is that anyone who buys the Cattman y-pipe in advance will get a discount on the header manifolds when they're ready. [Full header/y-pipe price minus price paid for y-pipe already = price of manifolds.]

You're not an MB owner, but you're not a Hyundai owner either. Keep in mind you get what you pay for - our higher prices result from our no-compromise approach to parts design and fabrication, not excessive profits.

Brian