Most stainless aftermarket exhaust are slightly heavier than stock but I would not allow that to be a deal breaker. For what you make up in power the extra weight is negligible.

Ok so this is probably a realy stupid question but is the dual exhaust advertised on Stillen's website considored a dual catback exhaust?
And I was also wondering, would the nissan dealership place that exhaust on without voiding the warranty? I know they wouldnt do the stillen Cat Conv w/ out voiding it because they arent street legal in any states rite?
Thank you so much for your help haha I feel kinda noobish:ughdance:

Stillen's exhaust is not a dual exhaust. The reason being is that the y-pipe forces the exhaust to flow into one pipe for a brief moment in time. A siamese x-pipe or h-pipe allows the exhaust to flow in their own pipe for the full length of the exhaust. The x and h connections typically result in better exhaust scavenging which equals more power.

Now, a true dual exhaust is an exhaust with two completely independent pipes without any sort of cross connection.

I honestly couldn't tell you if a Nissan dealership would void your warranty if they installed an exhaust. They need to prove that the aftermarket part caused an issue to void your warranty (Moss Warranty Act) which is highly unlikely of any cat-back exhaust.

thank you, so would the stillen exhaust not be the best way to go then?

DDMotorsports will this be the week?

I wouldn't say that. The Stillen exhaust is one of the best as far as power gain is concerned. It also has a very nice sound, and competitive weight.

It might be wise to wait for the Berk exhaust to see what they come up with, and even Borla's might be worth the wait.

Competitive weight? It is the heaviest exhaust I have seen for the 370Z so far. AAM is lighter by at least 5 lbs., and the Fujimura is 10 lbs. lighter than stock which is way lighter than the Stillen which is around 10 lbs. heavier than stock.

Granted we need weights on more exhausts to see what is the norm, but from what I have seen so far the Stillen is heavy as hell.

But in a competitive sense, how much gain is in the AAM or Fujimura (I have not seen dyno results from those two)? The Stillen offers one of the highest rear wheel HP gains from a CBE so far and only adds 10 pounds. Now if AAM or Fujimura can get close (does not have to equal) in performance and reduce weight then it is a tough call on which is better then.

That is all personal preference. I am just pointing out that this guy said the Stillen has a competitive weight, and from what I have seen, that is a false statement.

Being a false statement or not depends on what you are considering, as theDreamer mentioned. Most exhausts that add significant performance are heavier than the stock exhaust, basically due to the stainless steel used in their manufacturing, and partly to their design. So, given Stillen's choice of material, acquisition cost, and mainly their performance gain and sound note, that is competitive.

If weight is a major priority, full-titanium exhausts are available, some with good sound quality, but their price is on a different scale.

Find me an exhaust that weighs more than the Stillen and I will not call your statement false. You said the Stillen exhaust has "a competitive weight". As far as I can see it is the heaviest exhaust for the 370Z out right now.

I just don't like miss-information spread around the internet. My research shows your statement about the Stillen exhausts weight to be miss-information.

Guys, it's not just about weight. Power-to-weight ratio has to enter into the equation as well.

and, the weight is more in the back, which isn't necessarily a bad thing. Now, if you were adding more weight up front that would be a different story.

import111, I am not comparing it to other after-market exhausts, but simply to the stock. To me, adding 10 or 11 lbs over the stock for 18 whp gain makes this a competitive advantage over the stock. Again, each person's interpretation depends on what is important to them.

Also remember that the exhaust system is low and centered, which is pretty much the best place to add weight if you have to. Weight gain/loss will hardly be felt here if at all.

Back to the Berk exhaust please.
(not aimed at you DDM)

I really think you are thinking about this incorrectly. What MigueZ said was not mis-information NOR was he saying that its the lightest exhaust out there.
What he is saying is that the Stillen exhaust isn't light, but it isn't terribly heavy. Yes, it is heavier than stock, but it isn't heavy to the point where its weight can offset its gains. Therefore, I will agree with MigueZ that the Stillen exhaust is still competitive weight wise.

Oh hai Berk :pics:

Ok so Berk is going to try and have my exhaust ready for me to pick up on Sunday while I am down in their area! If I am able to get it, it I will shoot for a baseline dyno on Monday and install Monday night. Put a few miles on the car and shoot some videos Tuesday, re-dyno Wednesday.

N!!!!

Were you able to pick it up today?

No :(

Exhaust didn't get finished over the weekend so I still don't have it. They have promised it this week.

Ditto

sooooo, did u get the exhaust yet?? all the waiting and suspense is killing me haha!

Starting to think Berk may have not got the numbers they wanted to competitive will Stillen. Hench the delay, tweaking the exhaust to get better numbers? Just My 2 cents
The delay is leaning me to go with another exhaust.

wow... really?... thats too conspiracy theorist for me... 2 months with updates of progress and your complaining about it... in any case, even if you are right, wouldnt you want an exhaust that actually was extensively researched and not something that either doesnt compete to market or exceeds market performance but creates headaches after install... besides the more they wait the more competition they have, which either pushes them to create an exhaust that performs above market or price it lower than market... isnt that a win win?

I believe they are trying to catch up on High Flow Cat orders...they seem to be backordered everywhere.

Unfortunately nothing yet. :(

Not at all the case. They haven't even tested it yet period so we have no idea how it will turn out. The first tests will be done on my car up here in Vegas.

That is my understanding as to why the exhaust has been delayed. They are trying to fill existing orders. Stop ordering HFCs people! Just for a week. :D

too late :nutswinger:

:stirthepot::stirthepot::stirthepot: Again It was just my 2 cents. I agree the more time it takes to get it right , or to where they want the exhaust to perform. The better it is for us.

Still waiting....!!!

right..losing customers here. I'm considering another option now but am holding out !

Yeah, any updates?

I have narrowed it down to Berk or FI for exhaust.

I'm holding out until Berk releases their CBE before I make a final decision.

Me too. Though I admit FI is going to be hard to beat.

^^And price....:stirthepot:

Price should be close to the g37, which was 1400-1500 around. F.I said a bit cheaper priced this time around.

That is a bit more expensive than what the Berk system will most likely retail for. I asked them to come in here and give us all an update so hopefully we will here from them in here sometime today.

You should show them how the F.I. thread has just exploded. They're not doing themselves any favors in terms of market share by being slow.

I can see your reasoning.. but i'd like to think it's just Berk being perfectionists and wanting to get the exhaust done right the first time around, rather then dealing with unhappy customers having clearance problems or other issues. I like Stillen and all, but having to come out with multiple Generations (or newer batch fixes) of products for a CAR seems like a rush job to me.

But you could be right!

Good point, STILLEN made three different intakes for the G37 before getting it right