Comparison Vid: Stock, Stillen, and Berk :)
 

JB1 finally got his Berk all put together and man is it sweet. Here is a compilation comparison video showing a Stock (40th anniv), a Stillen CBE with ERZ Performance HFCs, and the Berk CBE with Berk HFCs.

I'm psyched to see this. But the video hasn't been processed yet.

One of the best comparison videos to date, excellent work buddy, didnt realize how tame the stock exhaust was until I heard it compared to the stillen/berk. Thanks for taking the time.

Thanks for posting...definitely helped me put a sound to the brands :tup:

Awesome video! Still doesn't help me decide which to get because both the stillen and berk sounded awesome.

The stillen seemed louder than the Berk at WOT or was it just the video. Or maybe it was because the berk sounded a bit deeper in its tone. Would you say that's correct?

I would have to agree with you watching the video

There are definitely differences that the video doesn't capture. The Berk is smoother and deep. The Stillen has a bit of raucousness to it, but it's an F1 goodness type of sound. Both sound great to me. I think either way, you'll be happy with your choice.

What, no F.I. exhaust? :stirthepot:

I don't know who was standing out there during the shenanigans sequence, but he took his life in his hands, would have made one helluva Youtube.

Seriously, thanks guys, nice job.

I think it just comes down to the bloke with the stillen exhaust was driving his car harder. Most of all in the in-cabin video.

:iagree: that's exactly how I would describe the difference between the two. And in the car the Berk one is louder. But this video was taken right after the install so the sound might mellow out a bit over time, based on what I read in other review.

So it sounds like we have to do one more vid Spear. This time with a couple of clean and identical drive bys: constant speed, WOT etc. and with some dB readings. Oh, but sans the shenanigans...

Let's see if Tony has sold one to someone up here yet. I'd be happy to get a vid and splice it in :). Hell, I want to hear one in person anyway.

The Berk and Stillen sound different at different times and somewhat close. Would have to see in person to really judge it.

listen right around 13 seconds, thats what a Stillen CBE sounds like when you really get on it, music to my ears. Sounds like a damn F1 car.

One question now that you guys are talking about Berk and Stillen...

If power was the only criteria to evaluate and both setups considered using Berk HFC's, which cat-back with produce more power? Stillen CBE or Berk CBE..??

So my question really is which setup would produce more power, Berk CBE/Berk HFC or Stillen CBE/Berk HFC...??

The thing is both sound really great to me with the Berk being more stock looking but that's about it...

Appreciate the input...

I don't recall seeing any Berk CBE dyno results yet...

to red370: the video is so f-ing epic. lol +1 rep added!

Thanks Red370, that does sound really nice. I cant wait to look at the tests on the 2 to see power differences.

So far, independent dyno wise, the Stillen and FI have made the most power, averaging between 15-20whp per, havent seen any from the Berk setup yet.

So in a nut shell its safe to say the Stillen, Berk, F.I cat backs will all give 15whp increase.

But doesnt the Stillen run a Y-pipe? The dyno's and website claims a 18whp increase. Is that right? Where would the design of the stillen exhaust make up the numbers due to the setback of having a Y - pipe? I was under the impression the best gains come from a X-pipe, Please correct me if I'm wrong....

Nice collaboration on this one!

I can't show modeling equations or anything, but if the Y-pipe is designed well and has a large enough diameter where the Y merges, it shouldn't be restrictive.

I'm pretty sure there was a post with dyno results with berk awhile back before the 2 group buys. Not sure where they are to dig it up though.. let me look

http://www.the370z.com/exhaust-intak...k-exhaust.html

Here is the dyno results. Baseline is with berk hfc and then catback is added on the next dyno.

baseline(with hfc)
1:280.80hp 244.28tq
2:284.15hp 243.22tq
3:281.29hp 248.50tq

cbe with hfc
296.90hp 250.91tq

Any links to the Stillen exhaust/berk hfc dyno results?

Check Semtex's album.

doesn't Semtex have a freak of a car though? Took to mods really strong? May sway things a lot without knowing compared to the norm.

Nice vid. You def. need to find another Z with an F.I. exhaust!

Nothing i've read has shown the car to be a freak, his dyno results are right on par with mine with similar mods. His dyno charts are legit with results that can be expected with each mod.

Gotcha, I just remember reading someplace about his car. Never doubted his results though.

Lets hear some input Semtex, i know you're lurking around somewhere...

:iagree: 100%

Mad Props to Spearfish and JB1 for putting this vid together...Awesome job guys.....

So its expected for the tone to get softer after awhile? Why is that?

My Berk got louder as my car adjusted to it!

That's good news to hear!!!! :tup: :tup: :ughdance:

Awesome video...I love JB trying to see if it's recording or not. Stock exhaust is quiet.

Yesterday my car with Berk/stock cats went on a dyno (Dyno Dynamics) along with shawnal's (Alan) Z. Alan's car has the FI with large CF cans and also long-tube Injen intakes. He made 5HP more than I did, both pulls were within 1 hour's time, no temp difference.

Alan - 6MT - FI/Injen LT intake/stock cats 289hp
Steve - 6MT - Berk/stock intake/stock cats 283.8hp

I'll post my graph shortly.

so im just going to make the assumption that the FI/Berk/Stillen make right around the same gains...

Question, for you stillen boys, did you think that your exhaust note became more tame the more miles you put on it? or is it because my ears have probably gotten used to it? Seems that even with the HFC's its almost too quiet for my taste.

Yeah, lousy driver AND a lousy camera man...

Hmm, not what I was hoping to hear. Don't get me wrong, it sounds great but it is loud enough as it is, don't need it louder. I guess I'll find out over time.

Let me try and clarify. The volume itself didn't really get any louder, the exhaust note "matured" if that makes any sense. My point was that in no way did it get any quieter.

The HFCs had a bigger change after a week than my CBE did.

Yeah, that makes sense, thanks for clarifying.

One more thing, the rasp I already had from the HFC's got more noticeable after the CBE install. I wonder if this rasp will get less after everything settles. Please note, it is not real bad, as it is now accompanied by a deeper exhaust note but it is quite noticeable.

Spearfish had a lot of rasp just after he added HFC's to his Stillen exhaust, but that got a lot less after putting some miles on the system.

How is the rasp for you now?