Exhaust for an nb se

nbse2 · Postby **nbse2** » Mon Aug 27, 2012 7:32 pm

I've decided to get a new exhaust for the SE. The prime reason is that I understand the performance of the SE can be significanty improved as the std system is fairly restrictive.

Theres a lot of product on the market and differing views. I have been advised that the restriction is in the muffler only, while another advised that a new exhaust is probably a better route.

When looking for an exhaust system, what should one really look for in a system. My only requirements being that its a quality product, will last, do the job, have a nice note but not noisy as such.

I spoke with Daniel at Deckspeed who advised that he could make one up for me that will do the job well that will have a nice note but not loud as such. Has anyone had one made up by him. If so, hows the note etc. Any advice or recommendations on what to ask and what to look out for would be appreciated.

jerrah · Postby **jerrah** » Mon Aug 27, 2012 8:10 pm

Does the SE muffler really restrict that much? I would have thought the main benefit would be in the downpipe & midpipe.

miataturbo guys seem to recommend 3" exhaust with 3" magnaflow.

Shambler · Postby **Shambler** » Wed Aug 29, 2012 10:34 am

Send me a pm, daniel installed exactly that into my SE in January

Postby **NitroDann** » Wed Aug 29, 2012 10:39 am

The muffler is the only really restrictive part apart from the exhaust housing.

Peters car here has a stock SE midpipe, with a much better turbo/downpipe, and the diff back has the muffler removed.

It sounds fantastic and is perfect goal a goal under 200whp, however going 3" will give you a much more responsive, quicker spooling setup, that wont feel like it lags then comes onto boost hard.

Jojo's setup has a 3" V band exhaust straight off the back of the turbo and makes boost at 2000rpm.

Dann

nbse2 · Postby **nbse2** » Wed Aug 29, 2012 8:58 pm

Shambler wrote:Send me a pm, daniel installed exactly that into my SE in January

PM sent

Luke · Postby **Luke** » Thu Aug 30, 2012 12:19 am

I've got MX-5 Mania's Stainless Steel 2.5 inch setup on mine.
Is pretty quiet and gave roughly 20kw at the wheels extra.
Looking at the original piping that came out, I would say change the whole thing.
Has been in the car for 20000km's with lots of track days, with no issues, still all in tact. It would be a bity over 3 years old now.

Picking 2.5inch or 3inch will also depend on what other mods you have or plan to do.
As I have no plan in changing intakes, computers etc, I went with 2.5 inch to match the rest of what I have.
The only real other mod I have is a bigger intercooler.

Postby **NitroDann** » Thu Aug 30, 2012 12:48 am

People giving advice here dont understand exhausts, you pick 3" every time if starting from scratch.

Its not about power, its about spool.
When the car makes it power and how it feels when it does.

Response.

Dann

nbse2 · Postby **nbse2** » Thu Aug 30, 2012 11:26 am

ignore

nbse2 · Postby **nbse2** » Thu Aug 30, 2012 11:31 am

Thanks Dann

I can only speculate as I have not dríven an SE with a 3" or a 2.5" only my standard car.

Take what you say that the 3" will make the turbo work better and quicker to work, but for every day drivability (which the majority of the driving will be, track days being the exception) and more importantly, one that produces a note that I can tolerate is there a balancing act here between the two?

Is there a substantial and noticable difference between the two exhausts on a standard car with no other modifications (except an intercooler - which I am still deciding on whether this is necessary given no other modifications).

Cheers