5th Generation Maxima (2000-2003)Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.
Welcome to Maxima.org!
Welcome to Maxima.org,
You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join Maxima.org today!
Hey everyone. Well I finally got the headers installed on my 2k2 Max. With the help of 2 other people on the org (Big thanks to Scott (Maxhopper97) and cullen(cullenj76)) the install took about ~10 hours. The headers come with an EGR port, that is for the 2k1 and 2k. Dont know about the 4th gens. But the 2k2+ does not have the EGR. So I had to find a way to plug it up. Problem is the plug would have to be metric and big. I decided to cut the port off and weld the hole shut. I did this at a local place here in Louisville that works on lots of welding. He did a great job and saved the coating on the headers. I talked to Brian about this and said he could get me a plug but well I was impatient . But the next batch of headers that he gets shipped in said will have the plug. so dont worry about that you 2k2+ guys. Car sounds great. Sounds like a 350z now but just a little quiter. Butt dynos are ok, but true dynos is what everyone wants to see. I dynoed first with the Cattman y-pipe, then dynoed with the cattman headers. I did 3 runs each, and took the best of both runs and put them together.
Dyno run of Cattman Headers vs Cattman Y-pipe
I can find differences of about ~30hp and 30ft/lbs right around 5600 rpm, it is a lot faster after around 4k, and then it really gets going between 5k-6k. Also not this is with the stock B-pipe and muffler. Also, when I was at the Dynojet place, the guy told me I had a peak HP of 237HP and torque of 234.5. The dots on the graph shows the greatest difference between the two dynos.
I talked to brian about this data and seemed very happy with it. he also told me he has one more set of headers in and more coming in mid-October.
All I got to say. Is great work Brian on an excellent quality products and excellent service. This is why I have tons of Cattman parts on my car.
-Dave Honey
aka Fezzik
__________________
2002 Nissan Maxima 6-Speed
Sterling Mist w/ Black Leather Interior
All options except Navi
Umnitza DDE
Unorthodox Racing UDP
Injen Intake w/ K&N
Cattman Headers
Cattman FSTB
Cattman RSB
Cattman provided coilovers
2.5" exhaust all the way to the muffler.
Great numbers....I wonder how it would sound with a Greddy catback.
__________________ Newest Maxima mod: Pioneer AVIC-D3 Next Maxima mod: Stop dumping money into the car. For real this time. Newest Yamaha R6 mod: Euro R6 Left Switch (Pass button and Hazzards) Next Yamaha R6 mod: Dunno...plenty of things to go.
My Maxi ran a 14.5 @ 95 on 4/10/05 (no weight reduction). MADE IN POLSKA
This is AWESOME for us 2k2 owners! Thanks for the post with the dyno sheet.
__________________ 2k2 Sheer Black SE 6-spd
Grey Leather, Fully Loaded except for Navi.
Stock....like BONE stock 'cept for 20% tint all around
Track times to come... Dynos to come...Mods to come after first track and dynos runs
Those gains over the y-pipe are massive! We know that the y-pipe give about 7-8 avg hp gain from 4k-redline. The headers seem to definitely be worth the money over the y-pipe. A few questions.
Could you please give some more details about the method of analysis? Same dyno used? Was there only 1 run for each? Same gas/octane used?
Have we ever had a HS and cattman header comparison?
Great numbers....I wonder how it would sound with a Greddy catback.
I know this will sound self-serving, but I'm serious when I say that the headers really sound best with Cattman Cattback exhaust. The resonator on the Greddy is just too small to manage the sound, and it will be quite loud. Tone suffers too.
I'm expecting the next header shipment around October 11. Also note that it will include a new 2004+ header design that we will be evaluating.
Wow the VQ35 exhaust manifolds must be much more restrictive than the Vq30s
I don't think they're more restrictive, its just that the stock manifolds (like the exhaust) don't seem to have been upgraded from the parts used on the VQ30DE. They're not nearly as restrictive on the smaller displacement engine.
Our catback exhaust makes lots more power on the VQ35DE than the 3 litre, just because the engine got bigger but the stock exhaust (and manifolds) remained the same.
those are EXCELLENT gains in both regions. would it be safe to assume that us auto guys could expect similar results? this is even better to hear after people seem to be having fittment issues with hotshott, although i dont wanna start a flame war here.
brian, do you guys have a set price for these yet? or an estimate?
Very Nice! When is the 2k4 header coming out Bryan? Do you know prices? Im so excited, ive been going mod crazy lately and these have been my #1 priority to get once they came out.
__________________
Whos got a spare 04-06 upper IM and elbow?? PM me
Do you guys know the gains from the headers on the vq30?
The original prototype testing was done on a somewhat tired 97 SE, and we got about 20hp over stock. Very respectable - without question the most effective bolt-on for that engine, and they do better on the 00-01s - but not quite in the league of the results we're getting on the VQ35.
those are EXCELLENT gains in both regions. would it be safe to assume that us auto guys could expect similar results? this is even better to hear after people seem to be having fittment issues with hotshott, although i dont wanna start a flame war here.
brian, do you guys have a set price for these yet? or an estimate?
You'd get the same proportional results on an auto (if the headers increase power by X% on the 6M, they should increase power by the same % on an auto).
To say I was pleased with the results would be an understatement. I do not know of ANY other bolt-on part for the Maxima that even comes close to these results.
To be clear, the headers we dynoed on this 2002 are not a new design, they fit all 1995-2003 Maximas/I30s/I35s (+ the 04 I35). That said, the price (when the next batch arrives in about 10-14 days) is $825 (up a bit due to the deteriorating value of the US dollar against the New Zealand $).
I want some! But all I have is about 22 bucks? What do ya say? J/K Maybee my wife will be REALLY generous for Christmas this year? Either way, I will have them! What a great product!
the headers come with the Y pipe, they are basically one piece. so if you were planning on buying a y pipe, and then buying headers later...you would just save for the headers...you would get the y pipe if you didnt wanna shell out 800+ for headers...i was just informed of this the other day, so dont feel bad.
The Cattman headers include the Y-pipe if i'm not mistaken.
__________________ long live the MAX
03 SE Titanium Edition, every available option minus navigation.
Berk intake-*-Otto FSTB-*-Clear corners (polarg front red LED rear)-*-
Brushed aluminum dash kit-*-Chrome oem "maxima" emblem on dash-*-
Piaa super plasma fogs(re-wired)-*-Polargs inside and out-*-
35 % tint-* Progress RSB -*-Progress springs w/ KYB GR2 struts-*-
nice gains. i am very interested in them but need to save up first. also what kind of cattman exhaust is there for a 96 maxima? and more gians from it then a greedy sp2?
I also have the Catback. I absolutely LOVE my Cattman exhaust. The observed power increase is unbelievable and this exhaust looks and sounds incredible. I have a completely different car since I added the UDP and exhaust. I said the same thing after doing my suspension.
I get stopped everywhere I go. It wanted to appreciate it the same way others behind me do so I went to an empty industrial park with my 19 yo son. With me outside the car, I told him to take a series of runs back and forth on this long straight (and very wide) stretch of road. I had him start off with a couple of slow drive-bys build up to a few at WOT. All I can say is, "damn my car sounds awesome". I can't wait to get to a Dyno and the race track. If anyone is interested in talking to an extremely biased person who did a S#it load of research before buying, let me know.
I'm installing the DDE's and HID fog kit tomorrow night and adding the 8K low beams. Woohoo....ain't moddin' fun?
Trex
Trex
__________________
02 Debadged loaded SE, Xtec 6000K HID fog kit, Umnitza Daytime Devil Eyes (DDE), 8000K Xtec HID Headlights, XM Radio w/Nav, FC Intake w/Apexi, U.R. UDP, Grounding Kit,Cattman Headers/Catback exhaust, CustomMaxima FSTB, Progress RSB, Progress Springs, Tokico Illuminas 4F/4R, Brembo Slotted/Cross-Drilled rotors 19 x 8 Motegi Racing F55's on 235/35 Toyo Proxes 4. Cleared Corners.
Sorry guys. I had to read real quick through the post. I try to answer a few questions. Dynos were done different days. But the weather was very similar and humitiy about the same. I had to do the dynos different days cause it took 10+ hours to install plus a week for the ecu to update it after reset. Also Running 93 octane. Dyno's were done on a dynojet SAE corrected, done at the same dyno place. I'll post the humity levels and temps tomorrow. Right now I am at the med school studying for a test. So. Check back for an update tomorrow.
__________________
2002 Nissan Maxima 6-Speed
Sterling Mist w/ Black Leather Interior
All options except Navi
Umnitza DDE
Unorthodox Racing UDP
Injen Intake w/ K&N
Cattman Headers
Cattman FSTB
Cattman RSB
Cattman provided coilovers
2.5" exhaust all the way to the muffler.
I'm sure you hou happy. I never dyno'd mine, but after my next batch of mods i really need to get myself to one. NY sux for dynos... they are few and expensive.
edit: he also has UDPs and hyperground (not sure if this actually does free up HP), so his gains are from the UDPs as well.
Hyperground doesnt really create more hp. i helps the engine out though on electrical issues. The UDP doesnt create hp but frees it up. This is without a cat back on my car. If i put a cat-back on it there is no telling what the gains will be but i know it will only be good. I did this just to compare the difference in the y-pipe and the header itself. Show's how much the header helps out.
I second a Cattman vs HotShot comparison of the headers. I am all for Cattman, fittment won't be an issue and quality will be there as always. Calln John Spangler over at HS is like getting a hold of Elvis Pressley- impossible, so how are you going to tell me that is good customer service on HotShots behalf ? Anyone have a set of dyno sheets of Cattman headers on a 3.0L ?
__________________
Mike Jez
2004 Volkswagen R32.
OZ wheels, tons of suspension mods, brakes, go fast & light goodies.
. But the next batch of headers that he gets shipped in said will have the plug. so dont worry about that you 2k2+ guys. Car sounds great. Sounds like a 350z now but just a little quiter. Butt dynos are ok, but true dynos is what everyone wants to see. I dynoed first with the Cattman y-pipe, then dynoed with the cattman headers. I did 3 runs each, and took the best of both runs and put them together.
question... I just hear so many different things....
long live the MAX 
Linear Mode
