Dyno results for new 02-03 Cattman Y-pipe!
10-23-2003 | 03:15 PM
#43
Originally Posted by 2kprlmax
my bad don't call me dumb i don't know why i asked about headers
You're probably thinking of the Cattman headers.
http://forums.maxima.org/showthread....eaders+cattman
10-23-2003 | 03:26 PM
#44
Guest
Posts: n/a
Originally Posted by 03BlkSETE
You're right, he did say Monday.
shipping tomorrow, so i should get it mid next week! thanks brian for putting out a quality product for us 3.5 guys! 
10-23-2003 | 03:32 PM
#45
Originally Posted by 2kprlmax
call me dumb but i don't see the headers on the website
My problem is that I have a great new website 95% done, with on-line ordering, but not up because I cannot make enough time to get through the revisions.
Brian C Catts
Cattman Performance
10-23-2003 | 03:35 PM
#46
Originally Posted by Cattman
No, call me dumb for not having the headers, new y-pipe and coilovers up on a website.
My problem is that I have a great new website 95% done, with on-line ordering, but not up because I cannot make enough time to get through the revisions.
Brian C Catts
Cattman Performance
My problem is that I have a great new website 95% done, with on-line ordering, but not up because I cannot make enough time to get through the revisions.
Brian C Catts
Cattman Performance
10-24-2003 | 01:39 AM
#49
Originally Posted by maximilion
For the guys that ordered the Y-pipe, are you planning on getting the b-pipe? Why or why not?
Cattman - any discount if we order the b-pipe at the same time?
Cattman - any discount if we order the b-pipe at the same time?
BUT (and you probably won't like this), I will only be discounting entire catback exhausts. We'll sell B-pipes or mufflers separately, but we really don't encourage it -- the Cattman Cattback system sounds and makes power best the way it was designed, as one unit.
That said, for those who want the maximum amount of power and an exhaust note not far from stock, the dyno #s of the Y and B together with a stock muffler were impressive and the B-pipe is a worthy addition for an extra $275.
Brian C Catts
Cattman Performance
10-24-2003 | 02:34 AM
#51
I don't know if I missed this, but regarding the issue for us having to cut one of the bolts to make it shorter, could cattman maybe supply us with a shorter bolt? Some of us don't have something to cut a bolt. OR, would washers work on the head side so that it'll shorten the side coming out?
10-24-2003 | 09:38 AM
#53
Originally Posted by maximilion
So you're saying that your exhaust doesnt' add too much hp as compared to the y&b pipes?
Exhausts typically do not make the power that Y-pipes do, but if I were to guess I'd say that the muffler makes roughly the same power as the mid-pipe, but together (as a complete catback system) they probably aren't quite as effective as a Y-pipe. There are 2002/03s out there without much more than a Cattman Cattback exhaust that are running pretty hard and I suspect that the exhaust makes more power on the 3.5 than it did on the 3.0, since there's more exhaust getting pushed through, but the stock exhaust tubing didn't get any bigger.
I had remarked that I wish I'd sent a muffler to Detroit to test with the other parts. The objective wasn't to test the catback exhaust, the customer wanted a B-pipe and they went ahead and tested it while doing the Y-pipe testing and in retrospect, I wish I'd had the whole catback tested.
Brian C Catts
Cattman Performance
10-24-2003 | 09:44 AM
#54
Originally Posted by maximilion
I don't know if I missed this, but regarding the issue for us having to cut one of the bolts to make it shorter, could cattman maybe supply us with a shorter bolt? Some of us don't have something to cut a bolt. OR, would washers work on the head side so that it'll shorten the side coming out?
I'd be very pleased to provide that solution if it were possible -- we provide some "facilitating" hardware for the 99-01 CA/NLEV version to ease its installation -- but unfortunately the problem bolt is a stud embedded in the base of the pre-cat and there's nothing to be done other than shortening it (if necessary, this does not always seem to be the case).
Washers don't work either, as hopefully illustrated by the diagram that I posted (write me for diagram that illustrates the issue and solution). Shortening the bolt between 1/4 and 1/8 inch if necessary is really no biggy. We've sold a bunch of these, so we'll very soon get a sense of how commonly this comes up.
Brian C Catts
Cattman Performance
10-24-2003 | 10:29 AM
#57
More Videos
ok, i was finally able to upload some more videos. i need a better DV camera. this is just my mavica which has a 15 second quick video clip setting. not much i can do, but hey, it's the best i can do for you guys.
due to my server having a limit, i'd like it if you could do a save as, and then watch it. last thing i need is 10000 people streaming it...thanks
Crusing from 1st-3rd gear, shifting at 3k rpm
Wide Open Throttle from standing outside
Wide Open Throttle from inside car - missed 3rd gear, smacked redline..DOH!!!!
yes, i had my strobes on...i was bored...
let me know if this helps anyone....as you can see, it really isn't that loud at all....and again, that is with an injen and a greddy, so dont' hink that just the ypipe suddenly created ALL that noise. it's a combination of all that. and standing in front of the car, most of the noise you hear is the injen, with the greddy taking over from the back.
due to my server having a limit, i'd like it if you could do a save as, and then watch it. last thing i need is 10000 people streaming it...thanks
Crusing from 1st-3rd gear, shifting at 3k rpm
Wide Open Throttle from standing outside
Wide Open Throttle from inside car - missed 3rd gear, smacked redline..DOH!!!!
yes, i had my strobes on...i was bored...
let me know if this helps anyone....as you can see, it really isn't that loud at all....and again, that is with an injen and a greddy, so dont' hink that just the ypipe suddenly created ALL that noise. it's a combination of all that. and standing in front of the car, most of the noise you hear is the injen, with the greddy taking over from the back.
10-24-2003 | 01:00 PM
#58
I live in Hawaii and shipping to me costs an arm, leg, and both nuts. If I order the y-pipe and ask you to wait a little while for a b-pipe deal, can you send it together to help me save on shipping?
Just out of curiosity, can you quote the cost of shipping to me? zip: 96720
Just out of curiosity, can you quote the cost of shipping to me? zip: 96720
10-24-2003 | 01:07 PM
#59
It's chrome alright...
Joined: Dec 2001
Posts: 4,009
Originally Posted by maximilion
I live in Hawaii and shipping to me costs an arm, leg, and both nuts. If I order the y-pipe and ask you to wait a little while for a b-pipe deal, can you send it together to help me save on shipping?
Just out of curiosity, can you quote the cost of shipping to me? zip: 96720
Just out of curiosity, can you quote the cost of shipping to me? zip: 96720
10-26-2003 | 06:15 AM
#60
Originally Posted by PoLo
ok, i was finally able to upload some more videos. i need a better DV camera. this is just my mavica which has a 15 second quick video clip setting. not much i can do, but hey, it's the best i can do for you guys.
due to my server having a limit, i'd like it if you could do a save as, and then watch it. last thing i need is 10000 people streaming it...thanks
Crusing from 1st-3rd gear, shifting at 3k rpm
Wide Open Throttle from standing outside
Wide Open Throttle from inside car - missed 3rd gear, smacked redline..DOH!!!!
yes, i had my strobes on...i was bored...
let me know if this helps anyone....as you can see, it really isn't that loud at all....and again, that is with an injen and a greddy, so dont' hink that just the ypipe suddenly created ALL that noise. it's a combination of all that. and standing in front of the car, most of the noise you hear is the injen, with the greddy taking over from the back.
due to my server having a limit, i'd like it if you could do a save as, and then watch it. last thing i need is 10000 people streaming it...thanks
Crusing from 1st-3rd gear, shifting at 3k rpm
Wide Open Throttle from standing outside
Wide Open Throttle from inside car - missed 3rd gear, smacked redline..DOH!!!!
yes, i had my strobes on...i was bored...
let me know if this helps anyone....as you can see, it really isn't that loud at all....and again, that is with an injen and a greddy, so dont' hink that just the ypipe suddenly created ALL that noise. it's a combination of all that. and standing in front of the car, most of the noise you hear is the injen, with the greddy taking over from the back.
Sounds just like my 2000 with catman y-pipe, Injen, and greddy.
10-26-2003 | 09:05 AM
#61
Senior Member
Joined: Sep 2003
Posts: 930
Originally Posted by Cattman
I wanted to pass along the dyno results or the new Cattman Performance Y-pipe for the 02-03 Maxima and I35.
I'd mentioned that it made more power over stock off-peak than at the maximum horsepower, and that's very much the case. Power is gained everywhere -- especially between 4000-5000rpm -- with a peak power increase of 16hp around 4400rpm. Average hp gain between 3800 and 6200rpm is 7.8 hp.
Note that we could have better dyno data in the lower rpm ranges -- No, the y-pipe did not lose power below 3800, they just didn't get the torque convertor locked up till that point. The second dyno, showing the addition of a b-pipe to the y-pipe shows that this could not possibly be accurate.
Here is the dyno comparing the stock y-pipe with the Cattman y-pipe:
And here is the one showing the Cattman y-pipe (before) with the Cattman B-pipe added (after) [Note that adding the b-pipe would not have "fixed" the low rpm issues of the Cattman y-pipe run -- this run is obviously very solid below 3800rpm.]:
It looks like slim margin, but there's actually a spot where it gains 8hp, but there are a lot of 4-5hp readings, which isn't bad at all for a b-pipe that leads into a stock muffler.
I have copies of the raw Dynapak data, and also a spreadsheet that effectively compares the before and after horsepower data, which I'll be glad to send on request (send me an email). Hope this information is useful.
And, remember, these and all the other Cattman stainless Y-pipes are available for $299 in commemoration of our 5th year anniversary -- sale ends officially Friday, 24 October (but by special request we're going to take stragglers orders Monday).
Brian C Catts
Cattman Performance
I'd mentioned that it made more power over stock off-peak than at the maximum horsepower, and that's very much the case. Power is gained everywhere -- especially between 4000-5000rpm -- with a peak power increase of 16hp around 4400rpm. Average hp gain between 3800 and 6200rpm is 7.8 hp.
Note that we could have better dyno data in the lower rpm ranges -- No, the y-pipe did not lose power below 3800, they just didn't get the torque convertor locked up till that point. The second dyno, showing the addition of a b-pipe to the y-pipe shows that this could not possibly be accurate.
Here is the dyno comparing the stock y-pipe with the Cattman y-pipe:
And here is the one showing the Cattman y-pipe (before) with the Cattman B-pipe added (after) [Note that adding the b-pipe would not have "fixed" the low rpm issues of the Cattman y-pipe run -- this run is obviously very solid below 3800rpm.]:
It looks like slim margin, but there's actually a spot where it gains 8hp, but there are a lot of 4-5hp readings, which isn't bad at all for a b-pipe that leads into a stock muffler.
I have copies of the raw Dynapak data, and also a spreadsheet that effectively compares the before and after horsepower data, which I'll be glad to send on request (send me an email). Hope this information is useful.
And, remember, these and all the other Cattman stainless Y-pipes are available for $299 in commemoration of our 5th year anniversary -- sale ends officially Friday, 24 October (but by special request we're going to take stragglers orders Monday).
Brian C Catts
Cattman Performance
10-26-2003 | 02:54 PM
#62
Originally Posted by Ferbs02SMMax
anybody notice the hp #'s on the dyno are higher than the tq #'s. I know they weren't done on a dynojet with rollers, but historically auto vq35's (and 6spds for that matter) torque #'s are about 12-15 higher than the hp #'s. comments ?
Yes, Dynapack systems do not adjust torque, but horsepower is recorded raw and then caluclated with SAE adjustment. The graphs are done with the adjusted data (like Dynojet's). That is why you see the disparity -- good eye! I looked up the formula for converting hp to torque and applied that to the adjusted hp. I can't re-incorporporate that into the graph, but I've added it to the spreadsheet data and if anyone is interested in a copy just send me email.
Each dyno system type is pretty unique -- i.e. comparable with each other, but not between systems -- but I really like the technology behind the hydraulically based Dynapack system vs. the old rolling drum-type Dynojet system. They've had huge sales in Japan because they're great for tuning and I was suprised to see that they have almost a hundred sites in the US now. Dynapack's a good Kiwi company from the Wellington area, glad to see them prosper.
[And, if anyone out there is an economic developer like I am in my professional life, I'll point out that Dynapack is an outstanding example of how NZ's selective government investment in technology commercialisation can allow a small local company to become competetive on a global scale.]
Brian C Catts
Cattman Performance
10-26-2003 | 03:21 PM
#64
Senior Member
Joined: Sep 2003
Posts: 930
Originally Posted by Cattman
Yes, Dynapack systems do not adjust torque, but horsepower is recorded raw and then caluclated with SAE adjustment. The graphs are done with the adjusted data (like Dynojet's). That is why you see the disparity -- good eye! I looked up the formula for converting hp to torque and applied that to the adjusted hp. I can't re-incorporporate that into the graph, but I've added it to the spreadsheet data and if anyone is interested in a copy just send me email.
Each dyno system type is pretty unique -- i.e. comparable with each other, but not between systems -- but I really like the technology behind the hydraulically based Dynapack system vs. the old rolling drum-type Dynojet system. They've had huge sales in Japan because they're great for tuning and I was suprised to see that they have almost a hundred sites in the US now. Dynapack's a good Kiwi company from the Wellington area, glad to see them prosper.
[And, if anyone out there is an economic developer like I am in my professional life, I'll point out that Dynapack is an outstanding example of how NZ's selective government investment in technology commercialisation can allow a small local company to become competetive on a global scale.]
Brian C Catts
Cattman Performance
Each dyno system type is pretty unique -- i.e. comparable with each other, but not between systems -- but I really like the technology behind the hydraulically based Dynapack system vs. the old rolling drum-type Dynojet system. They've had huge sales in Japan because they're great for tuning and I was suprised to see that they have almost a hundred sites in the US now. Dynapack's a good Kiwi company from the Wellington area, glad to see them prosper.
[And, if anyone out there is an economic developer like I am in my professional life, I'll point out that Dynapack is an outstanding example of how NZ's selective government investment in technology commercialisation can allow a small local company to become competetive on a global scale.]
Brian C Catts
Cattman Performance
I did catch some rerun of a car show on Spike TV and they showed how the dynapack systems work, where they physically bolt the drive wheels to these devices (which I may add you can put virtually anywhere) and off they go. The old dynojets are stationary and take up tons of space.
Getting back to topic a bit, Brian, (a) when you applied the conversion formula, what were the final adjusted torque #'s, and (b) would the rev band and peak hp and tq gains still hold true on a standard dynojet dyno ?? I gotta think if mods show a hp/tq gain on one dyno, it should carry over somewhat to another, right ?
If I could get ~10whp and ~15wtq with a y and b pipe on a dynojet, that would be outstanding for just change in exhaust parts.
FWIW, Im about 90% sure I will be ringing up your office during the week to order these parts, but I just want to do all my homework, since ~$550 for mods is nothing to sneeze at.
10-27-2003 | 09:53 AM
#66
Supporting Maxima.org Member
Joined: Nov 2001
Posts: 653
From: SoCal
My Y should be shipping wednesday!
10-27-2003 | 09:59 AM
#67
Originally Posted by D Love
My Y should be shipping wednesday!
i could have just kept it on more. but i usually start speeding up after a certain bump, and stop just before another bump, so a bump of ~5mph. the speed up started at around 80mph, and then increased to 130. not too shabby.
car feels great withthe ypipe (and now my cattman coilovers).
10-27-2003 | 10:50 AM
#68
Originally Posted by maximilion
The special for the y-pipe ends tomorrow - just to let you know.
And the special for this exhaust begins tomorrow - Brian, can you give us and heads up for the price?
And the special for this exhaust begins tomorrow - Brian, can you give us and heads up for the price?
Our full catback systems are marked down from $610 (w/ installation kit) to $535. More information on the group deals forum.
Brian C Catts
Cattman Performance
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