and remember its 26 hp TO THE WHEELS ... hahah

Car sounds great mark.. big change from when i was in it... didnt ever sound bad... just a little loud ...

We gotta meet up again soon

 

i wish our car ran on computer memory chips. lol 16GB! woo

 

This is awesome! So if I understand it correctly my current (no cat) Cattman Y-pipe will not work with the headers?

26whp will definitely be a noticable difference!! I've come to the conclusion that anything over 12whp can be noticed for sure. Small gains 2-8whp, I couldn't notice. Slap another 26whp on my car, that is wicked!!

 

They do

 

Brian. You should stop over and see the altima boys. They are getting worried. But IRRC this will fit our cars. Correct?

 

fastmax: Yes, 26 hp to the wheels, means about 20% more at the flywheel (32 hp). We will meet up again soon. I need to do more data logging and we need to pull the codes.

Apollo: Not sure why you think current y pipe would not work. Thats whats on my car. You should have a cat welded on to the y pipe. I think Cattman has them for sale. Ill be getting that done as well as O2 bungs welded in too. The 26 hp is VERY noticable; like mild turbo. You estimations of noticability versus hp is correct.

And now for your entertainment pleasure. Turn up your volume and listen as the Maxima accelerates onto the freeway taken up to 7100 rpm redline. It sounds like I suddenly accelerate more just after the video starts, but its the "V-Tec" kicking in with the sudden increase in horsepower form the header, consistent with the dyno run file. Its quite dramatic. I had to let off quickly at the end or I would have hit the car in front.

http://s3.photobucket.com/albums/y97...rMoviegp-1.flv

 

that sounds sick Deus!, what are you doing tomorrow?

 

Flying to Monterey for the day

 

So, my Cattman Y (5sp Auto) will bolt right up to the headers? I thought that was the whole point from the start, I may have just got confused.

You also touched on my next question. I wouldn't have any catalytic converters if I purchased headers. Are you saying Brian sells a cat/conv that will just weld into the Cattman Y-pipe? I mean I could have bought one with a cat originally but because of money constraints and it kind of defeated the purpose, I opted for the Y-pipe without the cat.

BTW, your car is sounding great.

 

I'm in the same boat. I don't know if adding at cat to the Y-pipe would leave me with no room for the stock resonator. Guys would I need to buy a shorter resonator to fit the converter? Brian. I guess your the best at answering that question.

 

U can get y pipe without cat, but then you will have CEL. U may be able to use O2 simulator and not have CEL. I think Brian sells y pipes with cats, or if not, he can have them made. I am going to have one made and have O2 sensor bungs installed so i have no CEL. It will be more smog legal, run cleaner, and be a bit quieter too. The cat will not interefere with resonator.

 

The resonator has plenty of room to be welded onto the B-Pipe. Don't worry about room for both resonator and cat.

 

Thanks guys.

 

Is a fix in the work for no CEL with a catless y-pipe?

 

Yes, I will be having a cat and O2 bungs installed hopefully next week. That should clear it. Ill keeo you all posted and Im sure Brian will chime in.

 

What I would end up doing is selling my catless y-pipe and going back to Cattman and buying their Y-pipe that has the catalytic converter built in. Realistically, I'm not planning on doing this until next spring, if I do go with the headers that's probably how I will do it. This way the is no space issues for sure.

FYI - in case there is confusion, right now I do not have an CEL running the catless y pipe with the stock manifolds.

 

So there's no way around the catless y-pipe + header setup, other than to get a cat?

Trying to save $ here, you know...

 

Well Brian will know more details. Remember, we are developing the header still. Im giving u all a blow by blow of the development. Maybe it isnt a good idea to do that. I think we will know more next week regarding cat and CEL.

 

No, please keep giving us blow after blow... lol

Sorry. I just got a little ahead of myself there... with the anticipation and all. I almost... almost... forgot the headers are still in the development stage...

 

We don't sell O2 simulators because the sale is illegal, but a simulator circuit should work here. That will fool the ECU, but its also possible that the inspector will do a visual check and notice that there's no cat.

Brian

 

The is only a CEL with no cat correct Brian. I will be getting the set with the high flow cat so I should be all set right. I just don't think the risk worth the little reward.

 

Havent gotten there yet, but hope to this week

 

I got a chance to really ring the car out, going up a steep mountain late last night (Mt Baldy). The car really pulls strong. Its is so much stronger than before, its amazing. Just wanted to share my impressions. A video/audio would be such a tease for you guys that it would be unfair, so I didnt record it.

 

its more of a tease if you tell us about it and dont let us enjoy it with you......lucky bastard

 

That's cold Deus, luckily I have headers!!!

 

Brian, I have 1 question, and please don't interpret this as trying to steal any thunder from this product ( I think it's great that the community gets parts like this) but, how much of a part do you think Dues's existing mods are having on the numbers? Mainly the kinetix+ECU as many people will not have these. Moreso the Kinetix

 

I've thought about too, but it was still the whp gain on top of what he had. I guess it would make sense if you dropped some headers on a completely stock Maxima you might end up with a lower number but at the same time I would think anyone ready to make the header jump would have already done some of the easier/cheaper bolt on mods. And of course you can start a whole new debate on how effective the Kinetix really is at adding whp. I'm not saying it does or doesn't, I love the look, I just know you have lots people on both sides of the fence.

You mentioned ECU, I agree that it is probably a good mod but don't you think intake/spacers/catback are probably just as important as ECU if you are going to add headers/Y-pipe? I mean you wouldn't do ECU/headers/Y-pipe if you haven't done intake/spacers/catback? But you can intake/spacers/Y-pipe/catback while preparing to do Headers. Headers seem to be one of the more expensive mods that a person does as they progress through the stages of making the car faster.

 

I agree, but at the same time to claim 26 HP because of headers is potentially misleading. The ECU might be a mod most should consider but could some of the added HP be because of the tune not the header.

My point is if a car has basic bolt ons, I/E/NWP will it too see 26hp? thats all that was meant. On the older altimas 17-20hp was seen on cars with I/E

 

There's nothing misleading about the dyno information we released because Deus has not done anything extraordinary to his driveline, and the mods that he does have do not artificially "enable" the header manifolds. I selected Deus's car because its an '05 (needed to test on a car with the wide-band primary O2 sensors), it has a manual tranny that makes dyno testing easier, and it has a performance catback; I didn't consider the rest of his mods to be that important.

The Technosquare ECU upgrade wasn't tuned for the headers, they were added afterwards, so that shouldn't be a significant issue. The Kinetix manifold loses power on the bottom end and makes power on the top end, but there's no basis for suggesting that the presence or absence of the Kinetix manifold significantly influences the performance of the headers.

No offense meant from this end either, Taz, but as I think about misleading performance claims, I can't help but recall your statement in an earlier thread that Racingline's 6th gen y-pipe performed better than the Cattman y-pipe (post 72 in the Racingline Y pipe teaser thread, "It still greatly improves flow over stock and as you can see actually makes slightly better hp than cattmans..."). This is despite the fact that your test was done on a DynoJet dyno with a 6MT Maxima and ours was done on a Mustang dyno with a auto-tranny Maxima (if the same car is dynoed on a Mustang and Dynojet, the Dynojet runs will always be higher).

Its always risky to compare dyno runs on different cars, at different times, in different dyno shops (even if the same brand of dyno), but the Dynojet vs Mustang and MT vs AT differences prevented any useful comparisons between the two sets of results. Although several org members pointed this out to me at that time, I didn't say anything because it was a Racingline thread, but your claim cannot be supported with facts.

Brian

 

In addition to the above-mentioned thorough response by Brian, keep in mind the TS reflash improved the bottom end more than anywhere else in the rpm range. I would highly recommend a reflash or piggy back after installation of header to get maximum gains. I would estimate that 10-15 more hp would had in this case.

 

If you are talking about outright dollars, it seems to be about the same as the catback, about the same as the Kinetix, about the same as a UTEC, and yet yields much more hp than any of these mods. As I stated earlier, it may be the best bang for the buck. Other than a turbo or squeeze, name a more hp-producing product than the headers?

 

True but you are forgetting install costs. Catback install should be fairly cheap or even DYI. Kinetix expensive purchase and install would be a tough dyi. Headers $$ and install is cost would probably be more that either Kinetix or catback.

I'm not knocking the headers at all, I was just addressing the idea that your whp gains may not reflect what another car might not gain since they don't have all of your mods ie reflash/Kinetix. I'd love to have the Kinetix and Headers but realistically, for me it will probably more than likely be next spring before I can spend that kind of money. I want the headers don't get me wrong

 

You're right - the install costs were not discussed. I tend to forget about factoring that in since I do all my own work. So lets examine install costs, a legitimate concern. The catback is a very easy DIY, or very cheap to have have done. The Kinetix is harder, but not difficult. Its a 2 hour project or less and a mechanic should not charge more than $100. The headers are not as bad as was previously thought. Its a 6 hour job but if several people from here went to the guy who did it on my car, I bet he would work a deal. There is no reason why he couldn't charge more than $250-300 for the job. Or, you could find some sucker to do it for that or less. When you're spending $700-900 for parts, I still think the headers are the best bang for the buck. Then of course when you're shrieking up a mountainside in the middle of the night, blasting through tunnels sounding like an F1 car, grinning from ear to ear and shaking ur head at amazement that it is a Nissan Maxima, you'll realize, it was worth it.

 

 

Hey Mark, where are we at with the 5spd auto now? hehehe

 

Im going to be the test car for the 5at... I am supposed to meet w/ catts shop in westminster some time in the next week or so...

Ill keep EVEYONE posted...

 

Excellent!!!

 

bump

 

Why the bump? When he has the info, he'll post it. Perhaps a new thread should be started when that time comes. NimoMax80 should clean this bad boy up and separate the 5AT talk for another thread.

 

this should be cool...