I have an 06' rev-up by the way (supposed to be 300 horsepower at the engine in stock form).

 

I have an 06' rev-up by the way (supposed to be 300 horsepower at the engine in stock form).

 

Well seeing as your attacking my logic, let’s take a look at yours.

1) You are not the original poster
2) The original poster asked for personal, opinion based reviews of our experience.
3) I never, ever, addressed you or your post. You hijacking the thread sounds less than appealing, let alone pointless. ( As well as highly egotistical, to assume that I am talking to you when I have made no address to you whatsoever)

Now, as to the substance of the issue.

- I found that my Y pipe added noticeable sound differences, which I found pleasing.

- I found that my Y pipe increased flow which helped the engine rev-up noticeably faster, which would not be shown in a simpleton "peak hp" dyno graph reading. ( let alone the fact that most dynos will show a noticeable increase in HP from the addition of a Y pipe)

- If your looking for HP gains it doesn’t take a genius to tell you that exhaust, or even NA in general, is not a great place to mod. That fact aside, adding additional flow to the exhaust, even when the next piece is smaller in diameter, will help increase HP and sound.

- The build quality is fantastic.

Please don't give me your lofty syllogisms, I don't care for them and they are badly constructed. Nor do I care for your condescending tone. But, then again, a man such as yourself would not care about how he is viewed by others.

I hope you prove me wrong.

 

Threads are for public discussion. PMs are for private discussion. I am not hijacking the thread, I am staying on topic. You are the one straying from the topic by starting an argument/flame war. I asked you a simple question that does not sound offensive when I read it back to myself.

I don't doubt it, nor did I ever dispute it.

I never claimed to be an expert about y-pipes. I asked a question and no one gave me an answer. If you claim that there is significant dyno evidence to prove that they make an improvement (despite the obvious restriction at the stock mid-pipe) I would like to see some dyno evidence. I don't care about peak HP either, I would like to see area under the curve differences.

"I found that my Y pipe increased flow" ... How did you find this? Aside from feeling the car "revving up faster"?


That is fantastic to hear.


I brought up a valid point, and instead of addressing the point, you attacked me and offered no useful evidence.


Thank you for the compliment.

 

There are very few Z's that have broken the 300whp barrier NA.

 

Woops! I meant 265 RWHP...which I believe equates to roughly 320 horsepower at the engine.

 

If you want to ask a question, start a thread. The OP asked a question and I answered him. You asking others to answer your question is pretty much the definition of hijacking the thread. I answered him, not you.

Go look up dyno's of aftermarket Y pipes, ive never seen one that didn't gain some amount of power. Why should we do the work for you? How do I know the flow in my exhaust increased? What do you want me to do, measure it? I could feel/hear the difference in how my car ran. He asked for opinions, not dyno graphs. I gave my opinion, you give yours, simple as that. And if you don't know enough information to have an educated opinion, you search the forums, look online, and post your own topic asking for people to answer you.


EDIT: Btw, your "simple" question as to how I know a Y pipe will increase flow is silly. Go search. I don't doubt you would flame someone who asked for information on if an intake increased airflow. Search first, ask later, you know that.

 

If you think my posts were inappropriate or hijacking, I invite you to PM a moderator. But stop trying to be one and stop telling me the etiquette of posting on forums.

I *have* been looking and I have never seen a before and after dyno with y-pipe alone being tested. Dyno gains based on manufacturer's claims, I do not accept as credible evidence.


I don't really think you understand my concerns about replacing stock y-pipe with aftermarket y-pipe.

It's not silly. What I'm asking is, is it easier to blow through a straw with an abruptly bulging section in the middle? Or is it easier to blow through a straw without the bulging section?

I don't know the answer but I don't really understand why the former should be the case. If an aftermarket y-pipe really helps airflow, I'm not going to dispute it, but I would like to know WHY this is the case.

Adding the aftermarket y-pipe (unless it is the same inlet/outlet size as stock) will basically be doing the following. These are oversimplified diagrams but they have the basic idea:




There are two factors at work here:
1) The aftermarket y-pipe is sure to have less internal restrictions. The stock y-pipe is definitely not the best (pinch welds, etc) That is to say, it is going to be a better design. (better air flow)
2) Replacing ONLY the y-pipe with a LARGER y-pipe will create an abrupt restriction as I have shown, unless you are also replacing the mid-pipe and muffler sections. (worse airflow)

The real question is, which effect is more dominating?

I just searched several threads on y-pipes. I did not see anyone bring up this topic nor provide before and after dyno evidence. Unless you know for a FACT that I'll find something, don't tell me to search.

The problem here is, *I* am trying to ask a scientific question about air flow and how it works. *You* are just trying to make a fool out of me for no good reason.

I originally presented this question to William @ AAM. Then you came in and said how great your y-pipe was. I don't doubt it, but I just want to hear some logical debate and not just tell me to "SEARCH SEARCH OMFG STOP HIJACKING"

You are really being a baby about this.

 

Do you still have your fuji y pipe??

 

interesting thread...

 

I'm all N/A and have a bit more modifications than you listed w/ a UTEC tuned by a great tuner and managed 267. 265 w/ what u listed is not gonna happen. And by the way I'm using stock Y-pipe with Test pipes and 3" exhaust and its not that bad although it should be swapped out. Good Luck

 

for that price you can keep them lol

 

How good are Intense Power Y-Pipes? There are really cheap at $135 shipped. But, I don't want something that is like Megan products and break in a couple months.