t0talacuratl

iTrader: (3)

Yesterday I swap out my RV6 J-pipe with a brand new XLR8. Reason, because my previous pipe had a leak from a badly scraped flex section. It took 2 hours to do, even though I had a lift. Some of the bolts connecting to the deletes were a bitch! Also one of the gaskets from the RV6 was worn and was causing a slight leak also. Fortunately I had some gasket maker that I use with the gaskets.

After the install, I can confirm that this thing hangs low! I will definitely have to drive carefully. Turned the car on and revved it up. It was very raspy, but I also heard another noise. It sounded like tin rattling rapidly. IMO this made my car sound really cheap. Not liking the sound at all.

When I drove down the road, all I was thinking was I was ready to take this pipe back off. It didn't even feel that much different from the RV6 after driving on the highway.

I went straight to a muffler shop to check after my work. They did not find any leaks. Driving away I was frustrated until I had to merge into traffic. THERE IS GOES!!! The power came in pretty hard! Don't know what happen before; I even had the battery unplug during the install.

Drove my car some more today. I sound a little better, but still have that slight tin-rattling sound as WOT.

Anyone with the XLR8 with a similar sound? I love the way my car sound with the RV6, but now it sounds cheapo!

Here's a couple of pics and videos. Can't really tell the tin sound in the videos though.









Here's the raspy ass rev!

http://www.youtube.com/watch?v=gpEjDs246vE

Semi quick drive-by...

http://www.youtube.com/watch?v=U3BePphhTkg

Full drive-by; first time I ever made it to 60 on that strip of road...

http://www.youtube.com/watch?v=g7Iz28Dz9R0

couple of 60-100 runs...

http://www.youtube.com/watch?v=tJIGVILlbtw

RonJonTL757

Dayyyymm that shit hangs low!!! Loving the vids man Ill have to hear it in person tomorrow and judge the rasp effect. Either way pretty fast!!!!!

t0talacuratl

iTrader: (3)

No doubt! It's much worst than the other day at your house.

Opel

if i used that Jpipe, my tires wont touch the ground! lol

t0talacuratl

iTrader: (3)

Can't imagine....

AckTL05

iTrader: (18)

maybe becuase you have the pre-cat deletes.

AckTL05

iTrader: (18)

or the custom catback...i have that jpipe with comptech and rv6 race pipe with stock precats and i rumble like a g35...the kid i bought my stuff from had same setup with precats and his sounded nice...then again he was slippry and had his engine bored out to a 3.5 and type s cams and titanium rods.

KzooTL

Put some miles on it, i'm sure the tone will change once you give it time to build up some carbon deposits.

t0talacuratl

iTrader: (3)

I'm sure it has a hand in it....lol!

It does sound alittle like a G35. My exhaust had a touch of rasp before. I think once I get some miles on the j-pipe, it will sound better.

AckTL05

iTrader: (18)

Eh - I felt top end gains, never heard anything once I put that on and it was my first mod for exhaust.

AckTL05

iTrader: (18)

Im sure it compliments the rest once changed thou. resonate your catback and im sure youll be fine.

AckTL05

iTrader: (18)

Instead of making another tread, anyone think it would be a good idea to remove the third cat that comes on the catback from comptech? I love the sound but want it a tad bit louder, would this do me good?

t0talacuratl

iTrader: (3)

I think I would feel more on topend if I didn't have the MDX spacer. My lowend is huge!

I have the Aero25 resonator; it was great until I added the deletes and j-pipe.

If you mean the mid muffler on the comptech catback, it will make it alittle louder.

AckTL05

iTrader: (18)

raspy or nice, I wonder if anyone has ever done this. Too bad Id have to hack up a sweet exhaust.

stillhere153

iTrader: (1)

my guess is since you had a leak it hid the possibility of your mufflers/resonator being blown...

what I mean is, a leak reduces back pressure, running catless = more heat, so I'd say the problem might be your mufflers/resonator

since your setup is custom it would be best to post the entire setup so we can help you diagnose what might be the root cause... rather than blame the jpipe

ps. DAMN it hangs low


What version of RV6 Cat deletes do you have
What do you have in place of the 3rd cat
What is the diameter of your "custom" exhaust
what resonator (brand?)
what mufflers (brand?)

t0talacuratl

iTrader: (3)

Ok here is what I have from the block back: Precat Deletes V2, XLR8 J-pipe, Stock 3rd cat, Greddy EVO2 piping (2.4"), Aero25 resonator 2.5"(on the straight pipe before the first bend), Borla mufflers 2.25", and stock tips.

Inaccurate

Woooo Hoooooo............................

SOUNDS WONDERFUL...............

Oh.. wait a minute. Your's sounds identical to mine. No wonder I like it.

Congratulations on the awesome sound and new-found power

Inaccurate

Many folks that install the deletes think that they have an exhaust leak. They hear a tingling sound at idle. That is *no* leak. That is how tube headers sound. I have had real tube headers on my small block chevy motor. And the precat deletes sound just the way that I would expect. Guys, that is no leak. It is the way it is suppose to sound.


Here is how mine sounds. This is a little 60-100 approx blast (approx 1/2 throttle).

My setup =
Precat Deletes --> XLR8 Jpipe --> RV6 Race pipe --> OEM catback(with midmuffler delete)

http://www.youtube.com/watch?v=BaXcEPScSqM

AckTL05

iTrader: (18)

Innacurate you should look into a catback, it will compliment the other exhaust features nicely.

t0talacuratl

iTrader: (3)

Thanks for the congrats! I keep up with all your threads. I got the sound that you're referring to with my previous jpipe, but that sound is really emphasized along with the tinny sound. The shop that looked at it also blamed the deletes. Since there is no leak, I blame the jpipe due to higher flow. Don't get me wrong, it performs as you say alright! No arguments there.

Also I would not change your set up at all. Wish I went your route originally; I would have been happier. My car doesn't get to 100 mph nearly as fast as yours!

j1n

iTrader: (1)

wow i had no idea that the precat deletes made the car sound like that. i have the XLR8 Jpipe and it does hang super low. i took a look at mine last time i had my car on a lift and it was scraped up pretty good. i only remmeber scraping like 2 times but it looked like i had done it more.


Inaccurate, holy shit your car went from dead quiet to screaming!!!

Excelerate

iTrader: (1)

The j-pipe was designed to be an equal length pipe so we had to sacrifice some clearance for flow. Unless you are lowered more than 2" it shouldn't be an issue. The j-pipe hangs about a half inch lower than the subframe but it hangs low where the front wheels are so the car rises up over bumps right where the pipe hangs down.

In terms of sound: the j-pipe really doesn't change the sound. If you have a tinny/raspy sound it's is probably due to the pre-cat deletes, third cat delete or the elimination of the resonator.

AckTL05

iTrader: (18)

innacurate got rid of 600 pounds thats why he's so fast.

stillhere153

iTrader: (1)

Check your aero resonator... Its a great resonator... BUT... "Sunny201" came to a lil meet at a shop in the bronx, and as he was on his way he told me something wasn't right about how his car sounded

He's got precat deletes, rv6jpipe testpipe and greddy evo2... After trying to diagnose his problem... And not finding any leaks in his car I jacked it up from the driver side and looked at the muffler... It had seperated slightly at the welds... Too much heat... This is my belief that ur rattle is coming from there

Dave_B

Adding some resonated exhaust tips may quell some of the new rasp. Much of the increase in rasp comes from the tiny flex section, especially if it's unlined and thinner walled exhaust tubing. The Maxima crew refers to that hissy rasp as "the bees in the can".

t0talacuratl

iTrader: (3)

That's a thought. However it's just too much of a coincidence that this happen after putting the j-pipe on. I will have the muffler shop that installed my resonator check it out.

On another note, I'm really digging the new performance! It makes the power delivery so much smoother and torquey. I don't even have to turn off the VSA for fear of bogging down. This was definitely the missing link.

Inaccurate

Speaking for just myself, I agree completely. In my case, I installed the XLR8 Jpipe a few weeks before installing the PCD (precat deletes).

The XLR8 Jpipe changed the sound of the car very little. No ting or raspiness at all.

The PCD did change the sound of the car a lot. But, I love the new sound. The PCD did cause a ting sound at idle (which I was expecting), and light rasp when getting into the throttle. But, I like both the ting sound and light rasp. The light rasp lets folks around me that something is afoot. But, I still have the sleeper aspect as long as I don’t get into the throttle.

BTW – the ting is the sound of the exhaust pulse wave hitting the walls of the PCD as the exhaust rushes out of the exhaust port. Real race headers and the PCD have thin-wall pipes. When I say thin walls, I mean in comparison to oem exhaust manifolds, which are extremely thick cast iron that greatly dampens the sound.

ABP_04TL

iTrader: (2)

whoa

t0talacuratl

iTrader: (3)

Ok so that we are on the same page here. Last night I was revving for some friends. I understand that there is a raspy sound. As soon as I let off the throttle, that's when you hear the tin rattling sound. Like something is loose. It sounds to me that it is totally different from the rasp.

Again I had the deletes on with the RV6 j-pipe. I had the raspy sounds, but I did not have this tin rattling sound. It's just too much of a coincidence to say it's not the j-pipe.

Schu

very tasty... we need some new bump Sticks

lowbudgetTL

iTrader: (1)

Alright boys, I'm soooooo ready for the PCD's... My set-up is Xlr8 j-pipe and Xlr8 RES-catback system. I still have the Stock 3rd-cat.

I'm a little worried abount rasp and noise if i get the deletes!

Anyone have a video clip with my mods plus the PCD's??

t0talacuratl

iTrader: (3)

You are going to get the rasp. I still have my stock 3rd cat with similar set up as yours. I still got rasp. You can't avoid it with the deletes. However I only have it at WOT. If you apply easy throttle, you won't hear it. Just listen to my rev video, that is how mine sounds. My exhaust is a tad more restricted than yours.

As far as the noise, it is only my case. No one else has reported this. Just trying to resolve my experience.

lowbudgetTL

iTrader: (1)

Thx, I gotta go to the store to get my wife a f-in avocado LMAO

I'll listen to ur vid while watchin Football later tonight

NedShneebly

What's Up, Adrian!

If you haven't noticed yet, a stone cold engine running through the PCD's will sound like a handful of loose change being dropped down the pipes for about 30 seconds, then it will hit it's idle purr based on setup. That cold start tinny sound was probably your 1st impression.

If you have a lot rattle after warm up I suggest letting the car cool down (a lot), fire it up and feel around the upper PCD welds for a leak (about 3-4" from the upper elbox). I know you got V1's and a couple of us had cracked welds. My rattle-y/induction type noise got louder and louder. Thought it was just my imagination. Had a couple buddies listen under the hood...then one day "Waaaaaahhhh"! Weld finally gave way completely and it sounded like a swamp buggy racer with shotgun pipes coming out of the hood. funny at first, very embarrassing shortly after that.

if it doesn't feel right, keep hunting.

t0talacuratl

iTrader: (3)

Well to tell you the true Jason, I don't here the tin sound anymore. I was driving all day today, and not a peep. Guess I had to get some carbon build up in there. lol! Still got the rasp though.

BTW, I got V2's. The guy that sold them to me had V1's, but they were replaced by Richie.

Inaccurate

You got an entirely diifferent tingy sound that I was talking about. I never rev mine under no load. So, I can't say if I got this or not.

Have you removed your Half Shaft Heat Sheild yet ?

t0talacuratl

iTrader: (3)

Sure did; when I installed the PCD's.

Opel

I dont like sharing my exhaust setup, for the simple reason of trying to keep it unique being that its custom,
but u wanna clean up ur sound...here's how to do it.. 2 resonators back to back, one the same style and design as the stock resonator, but the size of ur current exhaust piping right in the same place as the stock one (even a simple res will do, dont worry much about all the hype up of these popular companies, and the science they apply to their product) and one high flow resonator 6-10" further downstream (small chambered) <<the kind they stock at muffler shops. and don't run mufflers at all (i hate most mufflers lol)

I have straight through setup, with 0 raspiness, and none of those tingles and whistles. and nothing near unbearable drone!

i shared more than i normally would on this, but im just trying to help

Sonnick

Total, that sounds good to me! I know in person it must sound totally different, but damn. That thing moves too. This is getting me to lean to possibly the XLR8 Jpipe instead of going custom, but Idk yet because DAMN that hangs low. Precat deletes are a MUST, I'm so excited to get them.

Inaccurate, your car is a beast. I somehow don't think that was 1/2 throttle tho Lol. It sure sounded full throttle to me. Even being 5AT, that thing really moves. You gotta head to the track and get some timeslips!

t0talacuratl

iTrader: (3)

Opel, thanks for the advice! I'm starting to like the sound now. The tin sound is gone. Unless I go WOT, it sounds like before. I will consider adding another resonator though. I'm getting too old to have a raspy car....lol!

Thanks Sonnick! The revving video is dead on. The inside run video is quieter than in person. I'm loving the performance! Got a couple of kills to back it up too! If you're not too low, jump on the XLR8 pipe. I've scraped several times already, but nothing bad.