I spent time on the dyno and got the opposite effect. THer was an overall gain all along the RPM curve, but I was able to increase my low end with a muffler style based exhaust. And thats with a dual tipped config.

The claim that you wil loose or gain is somewhat a sweeping generalization with no proof. I have done countless dynos, hell even discovered the flaw or difference in the Canadian spec ecu's short term / long term trims.

I cant say what power those exhausts make, but i see more evidence that say they do create power.

 

Right.

And what kind of muffler did you use?

Is it a 'n1' style muffler? Is your muffler as free flowing as an 'n1' style muffler?

Funny... i can give you links to more then 5 different forums showing the opposite.

 

My exhaust is not a N1 style muffer, if you are referring to a straight thru canister type.

But I interjected because there are different schools of thought as well as entirely different engine platforms. Some will benefit from such a design, some will not. I posted a few theory articles which are related to such discussion.

Also if you have 5 different forums of reference, its not the best sources but it shows something. ideally if you have any media sources, dyno shoot outs in mags or something that would be great.

 

I encourage everyone to use references or even documents / publications to strengthen their point, its entirely possible for both sides to be right. For example , from a honda school of thought, these articles are informative and express information in an easy way to pick up.

http://www.team-integra.net/sections...p?ArticleID=47



When it comes down to design, an exhaust can look the same on the outside but its entirely possible that they can perform differently due to internal design and tweaking. thats from my experience.

 

Right.

So what are you trying to say / add to the discussion?

The OP is looking for a N1 style (straight through canister) which will cause back pressure to be lost.

So unless you used a N1 style exhaust on your dyno runs, then when you're providing has nothing to do with what the OP is looking for.

 

Oh, and i should have also noted that the threads have dyno plots included that backs up the fact of N/A motors using a free flowing exhaust can/will hamper performance.

 

I have asked people who have experience with this type of exhaust, early on when i was looking into the design of my custom exhaust 2 years ago. and I beleive my previous post mentioned something about design. and size refers to design. look I am not saying i know anything just offering up a point.


please, by all means, post references to these threads. I and everyone else might find it educational and add to the discussion

 

really where? im interested lol got a link?

 

Here's one from a old surpra forum in their 'FAQ' section. For some reason, the topic has been cached and the links are broken

 

wow if ur car is putting up 350hp non-turbo/supercharged, thats either 1 phat engine or an insanely expensive car haha


any diagrams and such?

 

a heat shield is a good idea for a sri , in terms of a ab exhaust from my personal opinion , there may have been little increase in power but nothin really noticable , but i think just getting rid of that stock gas tank , i mean muffler with a more free flowing muffler can only be good

 

Plenty of cars make over 300 without power adders from the factory...

No, i tried finding them but the links are broken.

 

i believe it was the SLK AMG the newer models, that produces over 400hp...N/A

 

e9X M3s make what, 414hp at the crank?
IS-F?

Just aint no replacement for displacement

 

not to keep bugging you for links. but if you can give us the URL that would be great because then we can follow the history of the thread instead of possibly taking things out of context.