if ur gonna have so much reason as to why ur going to buy this Y-pipe and its not for performance reasons and all the blah blah blah.... why make a thread about it??? you clearly are going to buy it no matter what, why cause the chaos?... wouldnt the older a car be the better your reasons are for modding it what does the age of the vehicle have to do with anything?

 

the best decision is to buy OEM if you dont care for performance as these are made for off road use only... (im sure the pricing is gonna be a factor now... its a no win here) im done

 

^^^

 

I ask the same thing? kukx you make no sense at all, you ask about dyno charts and performance and then you say you dont care about performance you just want to replace your y-pipe because the precats are old and probably clogged. Then wtf was the point of this thread really cmon, you got us over here trying to answer what you want and you just dont give a ****, you had your mind made up anyways so just go buy the stupid y-pipe and install it. Mods please lock this thread immediately.

 

Not everyone has to mod for dragstrip power. It's perfectly reasonable if he wants to do it to replace something for the sake of fuel economy, or to avoid the danger to the engine from deteriorating precats (which is a known problem).

I might ask you why you spend so much money modding your maxima and still only run high 13s? Hell, that will get beat by a big handful of $25k cars these days, right? So what's the point? The point is to do it with what you have, you know just like I do. Same reason I modded out a maxima to autocross - who the hell thinks that a maxima is a good autocross car? I did it because that's the car I had, just like you do it because it's the car you have.

Just because the OP's priorities may be something other than power doesn't make it invalid.

 

I think he just wanted the dyno to see, since he needed to replace the stock ypipe anyhow, it was worth it to just go the extra mile and do headers rather than a ypipe.

Plus with regard to driveability, its not necessarily the peak power on the dyno that matters anyhow - if he's not racing the car he may have wanted to see which has better numbers at the low end of the curve where most of his daily driving will be.

And at telling the mods to lock the thread (pretty sure Joel isn't going to listen).

 

The only problem with you statement is the title of this thread. He clearly asked about dyno charts hence performance he's asking about.

 

Wow are you making up excuses for him for everything I said

 

engine performance is about more than peak power. Take a look at the dyno of a stock S2000....it has similar peak power to a VQ30DE maxima at the wheels. Does that mean you want that powerband in a maxima?

You don't think that Toyota does dyno testing and tuning of the Prius or Corolla to maximize fuel efficiency? Because I doubt they're worried about getting extra whp in a Corolla....

(rhetorical)

 

In some parts of the world this is known as "discussion." But apparently since you have a maxima with headers that can maybe run mid-14s, we should just all defer to your vast knowledge of awesome fastness?

again, rhetorical.

anyhow, I'm done wasting time in here....the rational discussion has gone downhill fast.

 

Irish is brangin it tonight . I might run my buddy's 09 WRX Sedan (on a closed course) soon, he has an Injen intake/SPT catback. Thoughts on what to expect?

 

....yes...expect to get






j/k lol

 

 

Sorry, Irish. Time marches on. I could have phrased that differently, maybe.

 

For those who did not read the 1st post... pls read it once more!!

"I tried searching for a basic dyno for a y-pipe as the only addon on the 5th gen and couldnt really find anything.

I have an 01 GLE with close to 192K miles... I am sure at this point the cat and pre cats are probably clogged though I have no CEL but sometimes I do feel the car doesnt get up and go as she used to.

I have been reading up on how the y-pipe is supposed to be the single most bang for the buck upgrade on the 5th gen and have saved up about 400 to get this done.

I saw the warpspeed setup on ebay for the y-pipe and high flow cat and i'm considering it.

I realize that the front precat continues to stay on the car and only the rear precat is removed since it is in the y pipe. Does that create any issues to the motor since one bank of the "V" breathes better?

By any chance does someone have a dyno chart showing the true gains achieved?

Input appreciated."

Yes, I mentioned dyno but at the same time I have constantly and repeatedly mentioned that I would like this as a replacement for OEM part and not performance mod. Since I am in FL and can get away without the precats... I even thought about this.

Rochester and Irish and a few others chimed in as they understood what the thread was for and basically responded with the like.

I have also mentioned the requirement that it needs to stay under a certain amount. Sure, Essential gave a link to OBX headers... but after reading up much on them here on the org... I feel it would be a headache to install and then get them tuned right for keeping the efficiency I need from my daily driver. If these changes were for my weekend toy, sure I would have done them if it was in similar budget.

The point here is if you can use a performance part as a direct replacement for an OEM part.. and there are some gains then sure.. i'd spend like 20-40 more to get the performance part. When I had to buy a cat for my civic... the dealer wanted like $600 for just the cat... I bought one online of the "high flow" variety for like $75... everything was fine. However.. that was NOT a performance upgrade nor was it something I did with anticipation of getting more power. It was something that was cheap enough and in turn netted tad more performance. win-win.

With this change too I am looking for the same. I have already mentioned I drive mostly in the 1500-3000rpm range 95% of the time as I do not dog on the car... yes my car has 192K miles on the original trans and motor with no issues and reading issues i see with folks blowing stuff in their rides with under 100K ... just makes me shake my head saying do they really know how to drive! With that said... I am looking to keep driving this car.. the issue I need to address is the clogged precats.

Now coming to the y-pipe and header talk... sure 350 could get me both... one a really good y-pipe which would be a breeze to install or I could get a budget brand of headers which are a pain to install. I even put in a post with the actual cost... NOONE added to what the real cost of each of these mods would turn out to be. I feel what Irish said was right... folks who have headers love to keep talking about them... but with the total cost involved not known... how can you really suggest them to folks who actually have a budget!! Its like having $5K to buy a first car out of college and telling the kid to go buy a 2yr old M3...

come on... if you dont have something to contribute... save your time and mine... dont post and move on!

 

Yes, I read it and gave you this option. :

http://forums.maxima.org/7606067-post12.html

 

Hes actually not... hes only trying to explain the reason I posted this thread... you in turn still dont seem to understand why I am asking the questions I am... its all ok... on the internet some questions always draw differences in response! an internet forum is a gr8 place to know how your questions are perceived

All I am hoping to do by this thread is get an understanding of what i shud do... yes the y-pipe is easy cheap... but how much does it really add.. thats why the dyno chart point... headers... no estimate of cost... but supposed to give gr8 perf.... perf which I may or may not need .... and not proven to me since i dont see a dyno chart... pls... track times mean nothing to me... i want to see how much improved performance exists in that sub 3500rpm range where DAILY driving happens!

 

Hey thanks man... I really gave that a thought too... but i also read in a similar thread about the leak folks have found after install. I didnt see a concrete conclusion for that. That surely would address the front precat... from further reading... it is also the rear precat that messes up

btw... i'm amazed with how many miles you have on your car... I think the rate at which i'm going.. i should cross 250K in about 2 yrs !

 

kukx30de, there comes a point in any decision making process where continued discussion becomes counter productive. When the details are over-analyzed to the point that they carry more weight than the overall intent itself. If you keep waiting for the perfect dyno chart to show before/after on a stock 5.0 gen with only a y-pipe mod... well, odds are that's just not going to happen, bud.

Your instincts feel right on this for your high-mileage 2001, so install the aftermarket y-pipe and call it a day. Then come back, bump this thread, and let everyone know how happy you are with the results.

 

Keep in mind, that 225k is on my 4th gen (1995). My 5th gen has 121k.

 

If he doesn't have a tune, expect him to run lean with that POS intake. The stock intake on the 09+ is good up to about 350whp according to the "experts" on these cars (not me). Probably won't affect his power much, but it won't help him and he will probably detonate more. The stock tune is too lean already. SPT catback is *supposedly* good for about 5-7whp without a tune (I have one), but IDK how much I believe that.

What to expect? Well, 09s are running 13.1-13.3 bone stock consistently and a few have done 12.9 bone stock with good drivers. So if your friend knows how to launch, expect to lose badly I guess....

IDK, you know how much I care about drag so I don't have any firsthand experience

If you want more discussion on this, shoot me a PM so we don't discuss here and get someone's panties in a wad.

 

Damn its been crazy on this thread some good some bad and for the 00-01 Maxima there is also the SSAutochrome.com think headers are 200-280 dont know if they have the Y-pipe by itself though!!

 

I have to call shinanagens, With main cat alone (flowmaster) i got a reading of 100, with stock main cat i got 60, had to go back to stock headers with the precats in them, i got a 11ppm. You need 35ppm or below to pass. I just did this last week.

 

^ Sorry for being a little OT, but which states require you to pass a "sniffer" test?

 

That used to be the general consensus, and many member did pass. But, seems as if emissions are beginning to get stricter, just glad I don't have to deal with them.

 

....thanx for rubbing it in our faces.

 

just got my obx headers/y-pipe... i'll probably make a post about installation, etc.

 

It be easy to defeat. Get 2 cheap cats, inline. Make test pipes for the off season. I'm sure there are other ways vs reinstalling OEM pre-cats.

 

Darn the luck buddy.....no need to write about it we're all aware of that setup's obstacles....