Mine arrives tomorow, can't wait. Have a lot of installs planned for Friday.
Y-Pipe, Front and Rear BBK, Phenolic Spacers and last but not least my UDP. I plan on feeling quite a change in power when all is complete.

 

Ok I didn't see the others. Very cool. Yeah man the Cattman pipe looks WAY more streamlined than that stock piece of crap. You can't HELP but to realize some gains from this! Mine should be here this week man I can't wait!! I just emailed Brian to see if he's got tracking info for me. I hope I'll be able to do it this weekend as a project.

 

^!^!^!wow!^!^!^

How much do the Rotora's weigh? IMO, the UDP can be a 50/50 mod from everything that I have heard about it.

 

i dont have them anymore... but when i last ran i did... i now have kdw-2's

 

UPDATE!!!!!

THE NOTORIOUS RATTLE NOISE IS GONE!!! It must have been the heat shield around the stock y pipe...

 

Update for me. I got the Y-Pipe off...now the O2 sensor will not budge. I'm going to run it over to midas and have them bust it off for me. I'm uploading a comparison of the stock and cattman Y-Pipes side by side for everyone right now...

 

yea my o2 was in there very tight... that was the hardeset part my install.. had to use a vise to hold the stock ypipe...

 

As promised...side by side of stock and cattman.

 

wow man you are going to feel a HUGEEEEEEEEEEE diffrence ...

good luck and let us know how it goes... and price for installll

 

I hope no1 gets the option w/ a catt in it... waste of money/time/hp... go big (nocattversion) or go home ... I mean the install is so easy that you can just change it when u need to get smogged..

 

So far I'm just out the $10 it cost to bust the 2 bolts off back by the catalytic converter. The guy said maybe another $5 or so to remove that O2 sensor. This car was originally from Chicago and now in Ohio. I know from living in Chicago the salt and snow is terrible. All my stuff is so rusted its insane. Waiting for my wife to get home now so I can drive the Y-Pipe the 2 blocks to Midas. I'm too tired and would feel like a nerd carrying a Y-Pipe to blocks down the street

 

Hmmm... seems like Illinois does the OBD test as well for 1996 and newer vehicles... guess I could get the y-pipe without the cat then?

http://www.epa.state.il.us/air/vim/faq/testing.html#17

 

dood save yourself time and heat....

walk down there so that the car is nice and cool...

I did the work while it was still hot... made it a little harder...

take a walk my friend

 

I have Greedy exhaust will it work with the cattman y pipe? And will it blow any of the sensors? one last thing what is the HP gains?

 

it will work w/ any exhaust my friend...

no it wont blow sensors... why would they sell it if it did that????

hp gain conversation is all over this thread... read a little of the thread and you will see... refer to page one...

12hp 14tq

oh and welcome to the site you will get a lot of good info...

good looking maxima.. .where in cali are you ??? im in westlake village...

 

So, what are these going for? Group deal I assume?

 

I'm in Orange County. I was thinking of doing the kinetix manifold set up but this looks like you get more HP per $

 

Ok. So Midas couldn't get that O2 sensor off either. Said it had to be torched out, which would ruin it. I thought I saw a thread somewhere with a cheap price on O2 sensors? Anyone hook me up with one? Until then I'm going to put a plug on the O2 hole and roll without the sensor. I assume a Check Engine Light will result as well...

 

ya...I'm just going to get mine installed for $40 on Friday

 

Is it the rear o2 sensor and you dont have emissions catmann sell a sensor plug that doesnt give a cel I think.

 

How much is the Y pipe?

 

Dude awesome pic! THANK YOU SIR!!! It looks so much cleaner!! Airflow wise that is.

 

Hey Chern, did you eliminate that big goofy looking thing midstream down the exhaust piping? The resonator is it? What were the effects? Louder, more HP, anything? I Noticed the sucker the other day when they had me on the lift putting the Magnaflows on.

 

Can someone please help me find that O2 sensor group deal? I don't have search capabilities....

 

Hye guys I emailed Brian about the hissing/whistling sound and here's his reply.

Glad to hear that you’re pleased with the performance, but also concerned about the sound. I haven’t heard it do this, but all of our hands-on testing here in Tucson was done with the prototype. The proto was identical to the production version in almost all respects, BUT, I increased the flex section length from 4” to 6” to make it more flexible – the 4” was too stiff. Assuming that this sound is attributable to the flex sections, apparently when we doubled the length of the flex (the flex dimension includes two 1” end caps, so a 4” flex section has 2” of flexible area, a 6” has 4”, etc.) the result was a sound we didn’t hear before.



How loud is it? Can you send back a link to where this is being discussed online? I’m going to be out for most of the evening, feel free to relay what I’ve said above if that’s useful, otherwise, I’ll just pop into the thread asap.



Bottom line, if this is a significant issue, we can easily make it right. If the flexes are the issue, I’ve already ordered the remedy.



Brian

 

.............

 

The Cattman y pipe looks like a MUCH better design overall, I can't wait for the 6 speed version.

 

Anyone have a good deal on O2 sensors? I need one bad...

 

Not sure if Brian is cutting a group deal or not but mine was $372.92 to the door. DHL says mine will be here tomorrow! w00t!

 

Yeah it's just 3K rpm. I noticed it after I got it installed I got the y pipe and greddy installed the same day. Also I have not noticed any issues with performance.

 

no group deal ... its like 372 like someone else said...

 

if it doesnt affect performance i dont mind the sound... keep us posted

 

no group deals anymore...

i would just get one froma local auto parts store... little mroe money but u can get it asap

 

do this and the manifold and the spacer kit...

for around 1050-1200 you get a gang of hp ...

with those 3 mods your ride will fly

 

I started at the beginning of this thread 2nite, and am not quite to the end, but I'll pop in to say that we almost always have O2 simulator circuits. One circuit works for one or two secondary O2 sensors (only the sensors that follow the pre-cats, there's no simulator for the primary sensors on the "upstream" side of the precats).

Price is $28, shipping is cheap, give us a call at 520.575.6195, open 9-5 MST. M-F.

Brian

 

1. Yes, 2. no, and 3. probably more than our dyno runs indicate because the y-pipe had been on the car less than a day when those were run. Seems clear from others that these will pick up power over the first few days.

Brian

 

brian... any word on the hiss... i really dont mind it... its funny, i used to have a "rattle" coming from my stock ypipe section... but now with yours the rattle is gone... its like i tradded a rattle for a hiss.... ill take that any day...

sounds like a turbo spooling up... all i need now is b.o.v. LOL

anyway.. keep us posted.. thanks ...

justin

P.s. do u EVER sleep ahhah u work 24/7 man hahah

 

The 6M / 4A / CVT y-pipe version should be ready within 2-3 weeks. I'm ready to start taking pre-orders at the same intro price of $350 for the basic unit and $525 with a Maremont MetalCat (the core unit we use in our FastCat series).

Brian

 

Intro price is $350 + shipping. I'll need to raise the price to $379.99 after the first couple of batches.

Brian

 

I'd be very surprised if this isn't the flex sections. As I indicated in my email correspondence that was pasted into a post, this has caught me off guard. The prototype we did all the testing with had 4" unlined flexes and they were fine sound-wise, so I never thought of it again. They did seem a wee bit too stiff, however, so I switched to 6" flexes (flex measurements always include two 1" end caps). Stayed with unlined flexes because my historical experience with y-pipes and flex sections led me to believe that the hissing in earlier Maxima y-pipes was caused when the turbulance occuring in the 2-1 collector hit the inside of an unlined flex, but since these flex sections are above the collector, that theory goes out the window.

Note that these are very high quality Microflex flex sections (one of the only US-made brands you can buy) and the issue is limited to the sound. They'll last longer than most flexes out there, and the sound certainly doesn't take away from the performance.

Anyway, I'm keen to confirm all of this. We expect to receive some new Microflex flex sections by Monday (also 6", but these will be lined) and we'll drop a pair into a new y-pipe and put it on a car to see what happens. I will be extremely surprised if this does not work and if it does, the lined flexes willl be incorporated in all future production.

If the noise is a bother, I apologize and will see what can be done about it. Haven't quite figured out how much of a burden the sound is (seems like some aren't bothered much, but that will vary between individuals) but want to assure everyone that we always stand behind our products. Just don't know enough about the circumstances or cure yet to take a specific position.

But that aside, I really appreciate everyone's interest in this new product. Performance-wise, I'm very gratified by the input so far and we'll get the second version out ASAP. I'm following this thread now, so please feel free to toss any questions my way.

Brian C Catts
Cattman Performance