Z1 Motorsports H-Pipe?

Originally Posted by RanRich

Has anyone replaced their factory Nismo h-pipe with this full 2.5" version from Z1?

https://www.z1motorsports.com/z1-pro...t-p-16779.html

Curious to know if the flow improvement would actually yield any worthwhile butt dyno results or tangible numbers. $300 isn't bad and the OEM h-pipe looks pretty shrimpy. Know people have done full mid-pipe swaps, but any info or experience anyone can offer on this would be greatly appreciated!

UPDATE

Ended up buying after discovering a leak/broken weld on the OEM Nismo H-pipe. Got it installed last Friday and it sounds PERFECT - deeper tone but still quiet enough for daily duty and driving around town under the radar. However there are two things to address:

1 - once the system warms up after ~20 minutes of normal driving, it seems to expand to a point where it vibrates against the chassis at certain RPMs (from a stop, low 2K)

2 - the shop RTV'd the heck out of the slip joints but I can swear the right one is leaking once the system warms up and is under heavy throttle


I'll give it a 3/5 all in all. It sounds great but has some fitment issues that need to be addressed. I might get it welded and see if that helps but TBD.

Originally Posted by Apex000

Very good. i ordered this yesterday. looking for a little more sound out of the factory Nismo exhaust. i believe the factory sound isnt bad but always thought it would better if it were a tad louder.

have a clip of the exhaust by chance?

Originally Posted by RanRich

I will when I pick the car up from the shop later today!

A couple updates/notes:

• I called Z1 about the clearance issues and this can happen if the pipe is installed upside down, checked under the car and sure enough it was contacting the underbody on the passenger side slip joint area (thanks to my local shop for that one)

• While its back at the shop to be adjusted for clearance I'm having them weld the slip joints - If you want to go cheaper, I'd recommend JB welding this area because the RTV just doesn't form a solid seal here

Fingers crossed that this adventure comes to a close after today. Its so damn hard to get these engines to sound good.

Originally Posted by RanRich

I will when I pick the car up from the shop later today!

A couple updates/notes:

• I called Z1 about the clearance issues and this can happen if the pipe is installed upside down, checked under the car and sure enough it was contacting the underbody on the passenger side slip joint area (thanks to my local shop for that one)

• While its back at the shop to be adjusted for clearance I'm having them weld the slip joints - If you want to go cheaper, I'd recommend JB welding this area because the RTV just doesn't form a solid seal here

Fingers crossed that this adventure comes to a close after today. Its so damn hard to get these engines to sound good.