Yes! That sounds great!

I need to get me those HFC's sooner than later!

How does it feel?

Well it feels great, but the stock car felt great too :p As I said earlier, I can definitely feel a bit more pull in the high rpm ranges. When shifting "manually" with the paddle shifters, I keep hitting the rev limiter accidentally because 7.5k comes around quicker than I was used to from the first month of driving (you can hear me do that a couple of times in the vid I think, where you hear a double-peak in the rpms just before the shift). But butt dynos are butt dynos, so it's not conclusive.

Based on the sound, vibration/rasp issues, and just having a good look at the stock exhaust, I know that stock cat-back is the major holdup right now, probably robbing me of some of the headers'/cats' gains.

Hehe, I have the stillen catback and headers at home. Missing the HFC's ;) Damnit haha.

Well, I've got the headers and HFCs on the car, but no catback ;) I just got my shipping/tracking info today though. The Stillen catback (and gen3 intake) will arrive here thursday. I'm hoping to at least get the catback done this weekend, if not both.

That was an excellent writeup! We got detailed descriptions, pictures, & videos! What more could you ask for.

BERK is looking to source a 370Z to build a cat back exhaust for the 370Z so you guys can complete your exhaust systems.

thanks for the video clip
it sounds like a beast but i think it needs cat-back

Just some pointers if BERK is looking to make a catback for these cars:

1. Please make it all T-304 SS
2. X-pipe
3. No single muffler designs. Something similar to the Stillen and GTM units.

1. Of course!

2. Debatable. We will build & prototype no less than 3 different configurations (true dual, X pipe, conventional Y-pipe). One of them will have the best overall characteristics of sound and where you are trying to improve that power curve (mid range or top end). The perfect exhaust is one that would vary in length and size dynamically with engine speed & load, but that doesn't exist yet. Maybe in 20 years......

3. Yes, I agree with you here. Single muffler systems tend to act like a giant baffled muffler which hurt performance. If designed properly we will be able to use dual mufflers while still maintaining good exhaust tone.

And sorry about the thread hi-jack! We'll start another one later for the soon to come BERK 370Z exhaust.

No worries, this thread has outlived its purpose anyways :)

The delivery guy just showed up with my Cat-back and intakes :woot:. The cat-back is definitely going on ASAP, maybe tonight after I get done working. The intakes maybe this weekend (I may delay on the intake though, there's some other things I might want to do at the same time while all of the intake is out and the bumper is off). New video with a full exhaust setup (from engine block to rear bumper) should be up in a new thread by tomorrow.

Cool. Are you gonna dyno?

Yeah once these two parts are on I plan on it.

There are better 300 series stainless products for an exhaust system. Type 321 is a much better choice. It is titanium stabilized. As such it is much less prone to inter granular corrosion attack, IGA. Cracks form around the welds and everybody thinks the weld failed. The problem is chrome depletion in the grain boundaries in the heat affected zone, HAZ. The lowered levels of chrome allow the exhaust gas condensate to attack the grain boundaries. The problem is at it's worst for low mileage cars driven short distances. If you always get the car and the exhaust system up to operating temperatures then it isn't as bad.

The muffler on my 93 RSA failed around the outlet welds in 2 seasons. I cut out the welds and did the micro analysis in our lab and sent the report to the manufacturer. After initially telling me my muffler failed due to poor mounting, thus voiding their warranty, I got a new system in the mail.

Sorry for being 'really' off topic.

Thanks for the input.

What does the 321 cost though? I think 304 is a great choice.

Definitely keep us posted.

As for point 2... I said that because I'm not a fan of Y-pipes. I am assuming they tend to be the worst in terms of performance.