I'm asking here mainly because this is more targeted at 05-06 sedan owners mostly the AWD guys, i'm not 100% sure of about the RWD.

I picked up a HR pipe off a 08 350z, everyone raves about it, correct my if i'm wrong but there hasn't been a dyno on that alone but everyone dyno butt agrees.

Going from the older y pipes that are shaped like a T rather then a Y. There is obvious design flow improvements. But what about the 05-06 guys with the newer Y pipe design.

I was going to install my HR pipe today. I got under and saw that my Y pipe looked very much like the HR pipe. So ideally i have the same design of pipe. I dont know if the inlet and outlets are the same. But isn't the design of the pipe what we are all after? A better flowing exhaust...

SO guys with the newer design y-pipes, did you install the HR pipes and notice anything better? Better noise or etc? I don't want to install it only to see no different between my stock one and this one, since it was the same design and all.


Is my pipe any different then the HR? my HR has the puck things but that doesn't do anything for performance... if its the same thing i might as well trade this for a coupe mid for some noise and weight savings.

 

I believe I read in a previous discussion that the AWD models had a similar Ypipe to the HR's. The RWD guys had the "T-shaped" ones.

 

I have an 05 RWD and the HR was shaped different. I put it on after I had a coupe mid and HKS and it did make a sound different. As for HP gain, IDK.

My suggestion is to get under your car and look and if it does look similar then i would just keep current one on. Looks like you are in Chicago and im sure your nuts and bolts are gonna be rusted up, so make sure you soak in pb blaster or something similiar.

 

when i installed mine, it seemed like there was a slight bump in midrange and a change in the exhaust note. im thinking of taking it off and either going back to oem or getting an aftermarket y-pipe as im getting quite a bit of rasp with the MR res TPs and exhaust, and i think going from free flowing test pipe, to 2ish inch ypipe into 3 inch exhaust mite be causing a good bit of my rasp, other than the rasp that comes with res TPs

 

Weird im helping you out, but its just for sound. When i swapped mine out it just changed the sound, made it sound meaner. Didn't feel any improved performance. I was only able to hear it from the outside though and not from inside the cabin iirc as it doesnt add any drone.

 

i know theres a thread where on an 05 or 06 6spd coupe, the hr pipe gained pretty much the whole powerband and i believe it was 3whp peak gain. i would guess that an awd would gain <1whp because the design is so similar to oem.

 

those pucks are strictly for vibration dampening as the 35hr and 37 have much more vibration than the DE or revup.

 

The 07/08 HR Z y-pipe makes about the same gains as the MD XYZ pipe https://g35driver.com/forums/tuner-d...pipe-dyno.html

However, if your X has basically the same pipe (some do), then you're probably not going to see anything.

 

kinda kills me mood, but thats what i figured. the gains from the y pipe are mainly due to going from a T to a Y designed pipe.

i thought all 05-06 had updated pipes, but i guess its only the AWD guys who have it. most likely pushed it back for space on the t-case, and maybe by dumb luck found it to increase a little more HP and put in the HR engines.

I'll probably sell this then...took a while for me to find it too.

 

I have an 05 RWD sedan how much are you going to sell it for?

 

Supply and demand. Profit. Get paddle shifters if you have a manually adjustable steering column. Great mod.

 

When I installed mine I felt a slight increase in low and mid range. Exhaust note was also about 20% deeper.

What I noticed was, after driving about for 20-30 minutes, turned my car off. Then started it up again, the exhaust note was way deeper than before I had my Y pipe.

 

i have an HR g35 Y pipe in my garage waiting to install but i don't know why every1 always mentions 350Z HR Y pipe and not the G35 HR Y pipe, what's so different between them?

 

pm'd

 

pretty much your pipe is smaller then mines

all kidding aside... your g35 HR pipe is most likely off the sedan i think somewhere its a 1.75 ID version 2.25 ID of the 350z y pipe. or 2.25 is yours and the 2.5 is the 350z. basiclly a 350z for a g35 DE engine is a more uniformed exhaust meaning all the pipe has the same ID, so there is no restrictions period.

I haven't made up my mind yet.


But you guys giving comments, I'm only consider with the guys that have the new design pipes originally and installed the HR. If you had a older T form type of pipe and put on a HR, that doesn't help me. I need a Y shaped to a Y shaped, which apparently only comes on the 05-06 AWD models.