Alev

I do believe this thread has been officially hijacked... That is until Steve comes back from the track.

raceboy

Well, since there are obviously so many ways to state what I did, and you all understood exactly what I meant; my way is just as valid as any of the others mentioned.

jreiter

iTrader: (6)

No way man. It's "the same every time" and "right on". But then again, I ain't never even finished college...

FLY BY Z

Your thesis or your hypo-thesis or maybe it was a hyper-thesis.

qirex

hmmm dont yuou mean Precision vs accuracy?

precision refers to the smallest variance recorded when reproducing a variable. Accuracy refers to the smallest variance between said variable and a "known" standard.

prolly semantics anyhow...

D'oh

AHHHH, so many damn words!!

One of the benefits of becoming an engineer is that after a short time, you don't need to use them any more. Just focus on a couple of equations like F=ma and T=Ia and w= (k^1/2)/m


At this point, all I know is that I want this exhaust.

Thanks for the review, raceboy!

-D'oh!

elektrik_juggernaut

Damn.....this thread sure went off on a tangent....all i wanted was a dyno sheet.

Raceboy, i noticed that on this exhaust there's no equalization tube, since it's a true dual. Do you hear decceleration popping in the exhaust when you let off the gas?

TCL

raceboy, that's good news about the exhaust fitting with thicker sway bars, and it sounds like you don't consider the number of clamps an issue. Qusetion, do you think the exhaust would have to be removed to replace the rear sway bar? This might help determine what order to do those two modifications for those considering both.

Also, how much louder would you say it is than the stock unit? Is it okay on long trips in your opinion?

mdacko

iTrader: (3)

quite the random thread. Anyway, who has the best price on one of these right now??

all_bark

iTrader: (5)

I ordered mine for $625 from Coz at performance Z.

Hopefully it will be here this coming friday as promised!

zwindsor

iTrader: (6)

There's a crossover pipe right after the cats so it's not a "true" dual system.

D'oh

Just because it has an "H" pipe does not prevent the system from being "true" dual, right?

Practically every exhaust I've seen has some sort of arrangement of tubes to connect both sides of the exhaust in order to smooth out the sound.

Doesn't the new viper do the same thing since the original exhaust system sounded like a UPS truck with only the 5 cylinders exiting on each side?

What defines a dual exhaust anyway?

Thanks,
D'oh!

hfm

iTrader: (1)

David Borla said the true dual Borla exhaust is true dual...if you drop ping pong ***** they will never touch each other. The two pipes never merge together, there are infact two separate pipes with no cross-over.

Apexi350z

iTrader: (3)

I think originally the b/w installation graph shows there's a horizontal pipe between the two exhaust pipes right after the cat, but the finaly version does not have that pipe anymore.. it's a TRUE DUAL EXHAUST>.

zwindsor

iTrader: (6)

If you look at TXSTYLE's pics and this one below there is a crossover/connecting pipe about 6" long. It's not an "X" pattern so no ping ***** won't hit but gases will pass between the 2 sides.

I'm an oldy from way back when a dual exhaust meant a single line for each side and no connections what-so-ever. That to me is a true dual exhaust.

https://my350z.com/forum/showthread....threadid=32210

So when you say that the final version doesn't have this crossover then how many prototypes did they ship out because all the pics show the connection.

Just my $.02

jreiter

iTrader: (6)

Does it really matter if there is a cross-over pipe between the two sides? Would performance really suffer that much, if at all? I'm trying to get a grasp on the pros and cons of having such a connection.

From what I've gleaned off this discussion thus far:

1) A crossover pipe could smooth out the sound a bit.

2) A crossover pipe could potentially reduce performance (flow) if a signficant amount of exhaust gas was to travel through the crossover and cause a reduction of flow in the main pipes.

This sound about right?

webcarconnection

Yes it has a H pipe rigth after the 1st connectors and before the resonetors.... but this give the right HP and sound!!!

RODiculouZ

That's great to hear what you have found from the new Dual Borla exhaust. I have to ask though, when you said that it was 0.19 sec faster in the 1/4 and gained 2mph, is this an average from numerous tests(say 10 or more) or was this just from one run? I ask this because every launch and run on the 1/4 is never quite the same and it could have just been driver errors that could have given you the better times. I am not too familiar with G-force and how it works so forgive me if I sound like I am totally mistaking how it calculates things.

Regardless, its good to hear that you had some type of positive improvement. I agree that it should be dyno'd to tell us the true and accurate gains but just as long as you are satisfied with the exhaust, then it's all good. Have fun with it and drive hard!

FLY BY Z

An H pipe or an X pipe both allow equalization of pressure between two pipes. They sound different from each other but both provide better power gains over two separate pipes. The Borla is a true dual setup, it just has something that is technologically more advanced than the previous favorite setup. I mean, just because your an oldy doesn't mean you still use an abacus, does it?

An H pipe gives a more muscular sound and an X pipe gives a more exotic sound. Don't confuse these with a Y pipe which combines two into one. It is quite simple. Look at the respective letters and that is what the setup looks like.

TCL

webcarconnection, it was hard to tell from your videos how loud the exhaust is. How much louder would you say it is than the stock exhaust?