The ASM 70 is just about the only ASM part with quality issues, so you might want to find a different exhaust. The resonator has broken and developed a rattle on an number of these exhausts--per Aaron at GoTuning:

While not all 70's have this problem, be aware that the exhaust is discontinued because of this issue. It's important to do the research before making purchases, some products are solid and others are known to develop problems. A lot of Titanium exhausts are known to develop rattles in their resonators as well--but i just wouldn't run a full Ti exhaust on a daily driver due to the rigors it's put through on a daily basis--Expansion/contraction, heavy vibration, etc. The J's 70RR does't have a resonator or pre-muffler so it won't have a chance to rattle, but might be damn loud!

Most stainless steel exhausts hold up just fine. For items like exhausts where a warranty is important, you'll want to buy it new and from an authorized dealer so you can actually get help if you need it.

 

Oh thanks for the heads up. I was under the impression it was a known issue so they just fixed it with the newer ones, but I guess that's completely not the case. What exhaust would you recommend though? I want good throttle response, and gains would be nice, although I realize that's not really easy to come by with an exhaust only. Also, I think single would be better than dual for lightness, but I don't want something annoyingly loud for everyday use. I'm just not into that kind of thing I guess, since I want my car to still be streetable, and I really don't like all the attention.

 

I had it written down and I can't find it right now. It's marked on the unit, unfortunately I don't have jacks or anyway to safely get under the vehicle at this new house. The best way to get ahold of Asura is through phone; as far as who answers his PM's I'm unsure. I've also had great luck with reaching him by his email address.

To the OP, I just want to slightly clarify my position. There's nothing bad about JDM quality. I just find them under performing for the price tag, and generally with some sort of look/sound that I'm not keen on. Their products simply aren't my style on this car, that doesn't make them bad, they just don't meet my requirements. They do stand the test of time, so they are good quality.

 

I'm not too familiar with the taiwan exhausts like Megan and T1R, but as far as Japanese made exhausts go, i'd honestly go with the Greddy SE single, like what i have. i know it seems completely biased, but what you are saying you want is exactly what i wanted and found it in this exhaust.

So for gains, you'll want at least a 70mm. However if you don't want anything loud and annoying, you won't want to go over 75mm (on an n/a engine). So that actually leaves with only a few choices, especially since you want a single. Those that i've heard of are Greddy SE single, HKS 75mm single, T1R 70em, ASM 70mm. Looks like the ASM is discontinued. The T1R seems to get ok reviews, but it's a taiwan made exhaust and it has the dolphin tip, so not sure if you go for those two things. the HKS is probably the loudest of all due to the piping size and it has a huge canister, so it may or may not be to your liking. There are reviews for each exhaust if you look in the parts and modifications forum. I believe all exhausts should be around the same price range (except the ASM). Greddy and HKS should have a good warranty on them as well if you buy from an authorized dealer. I prefer the SE because it has a nice growl to it, but it's not overwhelmingly loud. Since you're new to the s2k, it would be best for you to get a ride in people's car to get an idea of what you like and what you think is loud. People on the forums have all sorts of different tolerances for loud so you get mixed reviews. For example, if you end up thinking the SE single is too loud, there probably isn't any quieter single 70, so you'd probably have to go to a dual w/ large mufflers like the Greddy SE dual, Invidia Q300 for Fujitsubo Legalis R. The HKS dual is a great sounding exhaust, but it's piping diameter is really small and will make little to no power.

 

someone is selling exhausts made in taiwan in nsxprime. it's pretty popular due to lower price than $3000 jdm exhaust when the quality is almost same. it is not that every product made in china/taiwan equals garbage.

actually, china, taiwai, or japan imports a lot of steel from big 3. it's the same steel that japanese automakers used on the chassis. it's really funny that some idiots like to hate/bash things like chinese/taiwanese steel is shit when they are completely ignorant. poor manufacturing, processing, quality control is the reason that some chinese products frequently fail.

 

yeah it might be Taitec, i think it literally stands for taiwan tech--they're really popular with NSX owners. i personally don't worry much about taiwan/chinese steel quality, like you said, it usually the quality of manufacturing that'll set the parts apart from each other. China and Taiwan factories definitely have the capacity and know-how to make quality parts, it's just usually they are contracted by a customer that wants to save money some how resulting in an overall lower quality part. That's how a lot of the taiwan/chinese parts companies operated in the early 2000's, but they've probably increased their quality by now. I think Taitec makes some pretty decent stuff these days, but i don't have any first hand experience.

 

I wouldn't really group Taiwan and China together though. They're quite different when it comes to quality, or so I've found.

That's kind of disappointing that there aren't many exhausts that are single and quiet, but I'll see what happens I guess. Thanks for the advice!

 

Interesting to note:
T1R sells their taiwanese/chinese products at the same price as alot of JDM parts.

Also i love how the B52 coil overs that T1R sells is actually rebadged megans. (looking at the shock body alone shows that)
And then they sell them at triple the price of megans AHAHAH

T1R= Taiwanese 1 Racing

 

The quality/fitment on my Taitec seat rail is top noch.

And yes, Taiwan may not be a recognized country, but I wouldn't compare the quality of taiwanese and chinese parts necessarily. Both have their good and bad parts, just how Japan has the same thing.

Buddy club seat rail anyone?

 

oh yeah, BC rail is terrible.

T1R is just fake JDM overpriced garbage from AJR. they were selling those "T1R badged" bride replica seats and fake j's racing exhausts for authentic price.