greetings to everyone out there in maxima land, i have a question for ya tonight. I just installed my ss y pipe today and there is a slight ringing noise when i acc , i know some noise is to be expected . i looked under the car to inspect it to see if there were any metal touching the pipe there was it was the heat shield from the cat right on the pipe i was wondering if i should bend the shield off the pipe or leave it be or any other suggetions u might have for me would be appreciated. thanx


DEBO

 

The heat sheild is touching the pipe?? Thats not right. That sounds like your problem right there.

 

thanx dude i saw greg p's web site and he said u have to bend it out of the way with a screw driver but its tough without a lift.

DEBO

 

The Y-Pipe isn't hitting anything, it is the hanger that is hitting. Read on....

The thing you have to bend out of the way a little bit is the portion of the Y-Pipe hanger that extends over the screw that holds it in. HARD TO EXPLAIN, but as you saw n my web site, a picture is worth a thousand words.

It will only rattle against the Y-Pipe under moderate to hard acceleration, and bending it slightly out of the way cures the problem completely.

I have powerbraked the Maxima while on a lift, and you can see why this happens, and why it does NOT happen with the stock Y-Pipe. When you accelerate, the Y-Pipe moves DOWN and BACK, proportional to how hard you are accelerating. It is the "down" motion that can cause the hanger to rap-tap against the bolt holding the hanger in on the passenger side of the car. The reason the stock pipe does not do this is because the flex portion is MUCH MUCH longer than the Stillen or Cattman pipes, and the flex absorbs the Y-Pipe motion before it can bend nearly enough to hit the bolt. I don't quite understand why Stillen and/or Cattman cannot make their flex pipe as long as the stock one. There is a very good reason why Nissan spends hundreds of millions of dollars on R&D. The whole point of the Y-Pipe is to eliminate the pre-cats, not change the flex length. There is a damn good reason it is so long.

-GP

 

i just bent the piece completly out of the way, but i am still getting a slight ringing its the same sound as before, bending the hanger didnt seem to help, greg do u have any ringing in your pipe? and what else can i do to help it?????

DEBO

 

OK, there's a difference between ringing and banging/tapping. A slight ringing is normal. The flex portion will make a very slight "bees-in-a-can" sound under acceleration, but should not do it during cruise. The only thing you can do to cure the ringing is to wrap the flex portion with some header wrap.

 

i dont understand why it makes a ringing sound like that i like the growl but that ringing makes the car sound tinny someone at cattman should do somthing about that . but between the y and the cai i love the power i took it out on the southern state today dam i was zooming. hey greg do u see the difference with the r/t cat?

DEBO

 

RT cat quiets the Y-Pipe down a little bit, and imporves power.

You were speeding on the Southern State Parkway, on Long Island??!! Be careful dude, it's the weekend. Use Ocean Parkway.

 

i know that was pretty dumb i wasnt going recklessly fast only about 85 but wow from 60 to 80 dam. i will try the header wrap, hey what part of li u from greg? and thanx for your help.

DEBO

 

I'm in Nassau, south shore.

 

hey i am right in lynbrook are u going to e town?

DEBO

 

I would like to try to go to E-Town, but I will be in the Caribbean all next week, and my flight isn't coming in until very late Saturday night.

I will have to makde my decision on Sunday.

 

well i am trying to see how many people are going from the nyc area thats why i asked. greg is all header wrap the same?

DEBO

 

As far as I know, it's all the same (header wrap). You have a great source right in Rockville Center. There is an SK Speed on Sunrise Highway...

-Greg