Do any HFCs or TPs not crack with S-Tune?
Hello all. Now that my warranty is up on my car I wanted to maybe change out the cats on my Z.
I have the S-Tune exhaust and after doing a bunch of research I have found that most HFCs and TPs will crack when paired with the S-Tune, or the Y-pipe will crack. I definitely do not want to risk breaking my exhaust for a few extra hp, but was wondering if a certain brand works with the S-Tune. I would prefer a HFC to a TP as my last car had a TP and the smell got annoying over time. Also, apparently Nissan changed the S-Tune at some point to strengthen it due to this type of cracking. Not sure if it is true but I bought my exhaust new from the dealership around the end of 2010. Any help would be appreciated. |
i would look into something that has the brackets for oem cat brace. i had the kinetix cats and they didnt have them and i cracked a cat. i guess worst case scenario you could have a shop weld tabs on the cat or TP.
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In theory, I would think Megan's resonated test pipes would work since they have a flex joint on them.
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The brackets do seem very important so if I do get something I will make sure they have brackets.
I don't think I would ever get Megan products. Even when I had my Civic I refused, so I would definitley not put that on my Z. Any other companies make it with flex joints? |
Just look for some that have flex pipes in them. You should be good then.
edit - just looked through CZP's exhaust section, and i dont see any HFCs with a flex joint. Only test pipes. |
Originally Posted by Bmurray350z
(Post 10412490)
Just look for some that have flex pipes in them. You should be good then.
edit - just looked through CZP's exhaust section, and i dont see any HFCs with a flex joint. Only test pipes. |
The smell isn't as bad as you would think. If you're driving aggressively with your windows down, you might catch a whiff coming to a stop. Otherwise, you will barely notice it.
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Originally Posted by Suwaidi
(Post 10412711)
The smell isn't as bad as you would think. If you're driving aggressively with your windows down, you might catch a whiff coming to a stop. Otherwise, you will barely notice it.
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With the ART pipes, I barely noticed the smell, if anything it would be one in 100 drives where I would smell it.
On a side note, the ART's got me +8.17whp, +11.59tq, two runs with rather similar conditions on the same dyno. |
I don't notice any smell at all. However I have been driving a Z with test pipes for the past 4 years lol. So I'm extremely used to it.
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So Megan is the only company to make TPs with flex pipes? If a better company made them I would buy them in a heartbeat. Any other company makes them with the flex pipes that I am missing? Decided I would go for test pipes over HFCs.
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Megan test pipes with the flex joint are still garbage. Both of my test pipes were cracked all the way around. One was even welded before. I'll try to dig up a picture.
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squalz.... do the ART pipes. I cracked a Kinetix HFC, and i have yet to have a problem with my ARTs
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Originally Posted by travlee9374
(Post 10429968)
squalz.... do the ART pipes. I cracked a Kinetix HFC, and i have yet to have a problem with my ARTs
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no sir, i am motordyne all the way. but i do have a buddy that has the s tune with kinetix cats and he has never had a problem. i think the s tune with ART would sound amazing though.
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Originally Posted by AdvanZ33
(Post 10411798)
In theory, I would think Megan's resonated test pipes would work since they have a flex joint on them.
I really do not understand why the Z33 likes to break exhausts. My Z32TT has NO play in the exhaust with 0 flex sections anywhere. 0 leaks for about 6 years. |
Originally Posted by Suwaidi
(Post 10412711)
The smell isn't as bad as you would think. If you're driving aggressively with your windows down, you might catch a whiff coming to a stop. Otherwise, you will barely notice it.
Leave the cats on, unless the car burns oil. Did anyone see the tolerances between the oil rings and cylinder walls in the FSM? The pistons are cast and they expand pushing the rings against the walls causing them to wear prematurely, especially true since the VQ is prone to heat soak because in Japan they hate cold-start emissions - I did not know this until I saw it happen and ran without a t-stat in the summers. They changed the casting process on the HR and VHR so oil consumption is not as common. But this is problem for Toyota and even Honda, though they will never admit it. You can see here how exhaust gets trapped at the back of almost any car. http://www.gtrblog.com/wp-content/up...tr35-2-010.jpg Probably not a good idea to sue the EPA. |
you should ditch the stune y-pipe. the shape and style is the same as the old de y-pipes just larger diameter which are inferior. get an xyz pipe or if you want it more muted just go with the hr y-pipe. you will get some hp as well as not have to worry about cracking test pipes / cats
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