ummm, i dont know what happened to the last thread i made or why that post was made, but i just wanted my newbie question answered. i just wanted to know how much more of a gain hotshot headers were than a y-pipe with stock headers. if this simple question that im sure everybody on this forum can answer can be answered drama free i'd greatly appreciate it. thanks

 

Hot Shot makes some kick *** headers, but for the best result I would go with Headers + y pipe + test pipe + catback, imho.

 

I read ur other thread WTF happend, anyway i would stay away from SS auto chrome anyway all my friends with 240s that had there parts all had terrible fit and cracked after awhile.

 

dont headers INclude the y-pipe?

 

yea, that is definitely the best combination but im just asking how much more of a gain headers are over a catless y-pipe

 

Yes they do. But they are different y-pipes, not interchangeable with stock mani's. Only the SSautochrome one is interchangeable - thus, it's ghey.

Sorry for calling you names. Uberpwned was seriously a *****.

If I remember correctly, Hotshot Headers make about 25-30whp on a VQ30DE-K with catback exhaust I think?

 

that a decent gain. but again, im just wondering how much more of a gain that is then just a catless y-pipe, thanks

 

What kinda cat back are you gonna go with MAX?

 

[QUOTE=Sorry for calling you names. Uberpwned was seriously a *****.
QUOTE]

Lets not start with the name calling, he was obviously just trolling. Dont wanna get this thread locked, MAX already got in trouble for that last one.

 

yea i really dont know why either. lol

i dont know what catback im gonna go with, i like the cattman the best but its pricey and i cant find any used. frankencar is also a nice one. im not a fan of the greddy one tho

 

Well since Uberpwned and MAXjersey01 are one in the same, I guess you're calling MAXjersey01 a *****.

 

I dunoo from what i hear, Y pipe= 10 hp. Headers = 20-30WHP. So your prob looking at a 10-15 horsepower difference. Atleast i Narrowed you ? down.

 

Do not get a y-pipe now if you plan on getting headers later. When you buy good aftermarket headers (Cattman or Hotshot), they will include a piece that replaces your stock y-pipe, and it usually includes a curved pipe to make both exhaust paths equal in length. You can't just buy an aftermarket y-pipe now and get the "front half" of a set of headers later. Even if you did, they wouldn't bolt up to the aftermarket y-pipe. Look at pictures of aftermarket y-pipes and aftermarket headers on the web. You'll see what I'm talking about.

So... do you want to buy an aftermarket y-pipe, or do you want to go all out and buy aftermarket headers?

On the 5th gen (2000/2001), you see pretty good power gains with just an aftermarket y-pipe, but the gains would be a little better if you got full aftermarket headers to replace the stock exhaust manifolds. This is because your stock y-pipe contains a restrictive catalytic converter, and replacing that piece is where you get most of your power gains from.

On the 5.5th gen (2002/2003), your power gains from an aftermarket y-pipe aren't as dramatic as they are for the 2000/2001 models. This is because our front catalytic converter is part of the stock exhaust manifolds instead of the stock y-pipe. In order for 2002/2003 owners to see a dramatic change, they have to replace the stock exhaust manifolds and y-pipe with aftermarket headers.

 

Oh... I forgot to mention that whether you choose a y-pipe or headers (or even if you just stay stock), your gains will be best if you dyno tune your ride and use something like the Apexi SAFC II to tweak your air/fuel ratio for maximum power output.

 

there is definetely a gain in headers over the y pipe. i do not have any direct comparisons because my dyno runs included other mods than just y pipe versus headers. headers did cause my a/f to run extremely rich which negated most of the power. it was corrected using a vafc2 and i am now around or just over 200whp in my auto. in my specific instance, i would say the headers provided 7-12 more whp than the y pipe did along with decent weight reduction. on cali spec cars, the stock y has 2 precats with aftermarket y pipes eliminating only one of those precats. most of the additional gains from the headers comes from removing the last precat.

 

In addition to what Sloppy said, the manifold and collector design of the Hotshot or Cattman headers also contribute to more gains over stock manifolds plus aftermarket y-pipe. This is also why just doing a FED spec conversion (ie. replacing the front pre-cat with a FED manifold) doesn't yield any gains, even with an aftermarket y-pipe.

I personally think the gains really come from the design of the headers, not so much the pre-cats. That is why the Stillen, Stone Mountain Racing, and SS Autochrome headers for the 5th and 5.5th Gens don't show much/any gains: because they are all stock-like shorty headers less the pre-cats instead of the longer tubes and equal length collectors that the Hotshots and Cattmans have.

 

Because you signed on under a different ID as UBERPWNED to play Mr. E-Thug, that's why. I'm actually surprised the mods let you off so lightly.

 

 

The more reminders we have, the better....

 

well if you eliminate all your cats what do you do with your second o2 sensors?

 

your ride is hot... I am in love

 

You can use a dual output O2 simulator to simulate the signals from the secondaries. You will need to leave the O2s plugged in because the ECU still needs the heater wires in order not to throw a code.

Or you can find a way to simulate the heater wires as well using resistors and just use the O2 sim and those, that way you can get rid of the secondaries altogether.

www.o2sim.com

http://forums.maxima.org/showthread.php?t=435399

 

spiromax cleared it up for me the best, thank you. so what you're saying is that headers have more of an increase on 02-03's then they do on 00-01's because the cats are in different places?

and i dont know whatanybody is talking about, that other uberpowned name isnt me. ive been on this site since ive owned a maxima under this same name. im not good with computers but if theres a way to check that that name was me i'd apprecite it so people dont think that was me. im respected on every dsm forum that i am on under the name "98gsxdude" if anyone wants to do any research on me if u truely think that other name was me please feel free. i dont like being blamed for something im not guilty of. thanks

 

I can vouch for him i learned of this forum through him fron NJDSM, i had a 2G talon before the max.

 

Can you explain why your UBERPWNED and your IP address and ISP match exactly?

If you're not computer savvy, IP address is a unique identification number that is unique to each person. Apparently by them matching each other, it is quite apparent that you registered as new member to flame on me on the very first post. (but that's ok, I'll be mature about it)

I'm not trying to start a war. After all, it's just the internet. If you think what I said is bad, you should go back to some **** contests and wars. Those were really bad.

Now, back on topic, headers.

 

then the IP address couldnt have been the same. i only have 1 email addess, i couldnt have had 2 names on here anyway. i have nothing against you and i wouldnt have posted that, ive never made a post like that in my life on any forum, thats why i gave you guys my name on the dsm boards to prove that ive never made a post like that before and that im respected in the dsm community. i know your being mature about it and all but i still dont want you to think it was me who did it. and im sorry for asking the most newbie questions but i tried looking everywhere for information (like a newbie FAQ or an upgrade path or anything) but i cant find answers to any questions that i have. and i didnt like being called an "idiot" because i didnt know something about these cars, but i still wouldnt have made that post. all i wanted was a straight answer, or even an answer thru a PM.

but anyways, about headers, if they can add 20-30whp, wouldnt a 3.5 6-spd with exhaust, intake, and a tune be about as quick as a stock 350z? cuz i was looking on autotrader car comparisons and it looks like the maxima doesnt weigh much more than a Z, even tho i dont see how thats possible.

 

what bout an 01 max with an aftermarket cali spec ypipe compared to an aftermakrket fed spec ypipe will they receive the same gains? also wats the gains on the 01 max ypipe vs headers exactly?

 

That's basically what I was saying, but please remember that getting headers will produce the best gains no matter what kind of 5th gen you have (2000-2003). It's just that the 2000 and 2001 guys see better gains from a y-pipe than the 2002 and 2003 guys do, because replacing just the y-pipe on a 2002/2003 model doesn't get rid of the restrictive front cat.

Depending on how much money you want to spend, either replacing your y-pipe or getting a full set of headers is worthwhile on a 2000/2001. For 2002/2003 owners, just getting a y-pipe will produce some gains, but you'd have to get headers to feel a dramatic increase in power.

If you do a mod that removes your front catalytic converter, you can use an O2 simulator to fool your ECU into thinking that the O2 sensors are properly installed and receiving the right signal.

Keep in mind that you'll see the best gains with any of these mods if you dyno tune your ride and use the Apexi SAFC II to correct your air/fuel ratio. This is not a necessary mod, but it is recommended for maximum power. You can install the headers or y-pipe now and do the dyno tuning later when you have the money and time.

 

i didnt read over the entire thread but aside from higher peak power, throughout the curve there is improvement and thats more important than peak. If you are looking to get the most out of the car, go with headers. If you dont plan to keep car too long and just want more power, get y pipe, there is a lot of work involved wit headers from what i hear and if u just gonna sell car 3 months later, i dont think its worth it. I'm waiting for some headers though

 

anyone know bout gains with cali vs fed spec (00-01 max andd ypipe)? is there a difference or the same exact gains? just curious cause my car is fed spec and i just ordered a redline max ss ypipe

 

i think i have an safc1 laying around in my garage somewhere from my old car, so i think im good there. and about the 02 sim, cant i just take the bulb out of the check engine light in the dash? i did that with my eclipse, then just checked it with a scanner every month or so to make sure nothing funky was goin on.

 

Yea i did the exact same thing on my subaru, i just reset the computer, which clears the codes, drive to state inspection and pass with no cats lol.