Exhaust types

Ok so I just had my exhaust re done
But I see lots of mr2s with those eBay style ones with the cat straight pipe and splits off into two tips like cannon style.. If anyone knows what I'm talking about? My exhaust follows the stock kind of set up with all the bends etc except has a hi flo cat and is mandrel bent and createote power

Just wondering if the first mentioned exhaust would create more power being more straight?

Or what would someone recommend for a custom exhaust for an Na
Very happy with mine but it was cheap and just to replace the old one before rego was rusting out.

Was thinking stainless system
Quad tips keeping my hi flo metal cat
Just asking what kind of system same kind of bends as stock or go more straight? Any ideas
Sorry I'm confusing

Ahaha

Yeah thanks for that man,
But interns of losing power from what I r read that's false just changes your torque point mines a 2.5 inch and it gained quite a bit of power compared to the 2 inch press bent system

But no I agree the dual tips look great :)

Even if a single tip provides (a tiny bit) more power, I think it is far more important to retain the unique twin-tips of the SW20

Cat back exhaust on an N/A does SFA...mainly provides noise/drone 
and I think the 3SGE has decent 'headers' anyway

Sorry red but QUAD TIPS FTW!!! haha

Hmm I think this is like the 2nd time I posted this car lol. The quad tips are very proportionate on this car so I approve!

Not many headers for 3SGE non turbos but I found this:
http://www.importmonster....2%20NA%203S%20GE%20set
Dunno how it compares to Fujisubos

You will achieve nothing appreciable from going to stainless. This is not coming from me, it's coming from 50 years of experience and I am not qualified to argue the point.
 
This is not a blanket statement as there are notable benefits such as, temp and noise control.
 
If you read up on the physics of exhausts there is not a lot you can do past the headers except get the exhaust out ASAP. The best option is no exhaust but since we have to have them, you then have to mitigate the damage of having something downstream of the ports. The whole design is mitigating this degradation of flow bit by bit, but every part you add does more harm by lengthening the time it takes to leave the system. So everything from the ports to the tip is a compromise and it all needs to be considered as a whole, not as individual parts. (I'm sure there are far more qualified engineering experts who would dispute this but this is as simple as I could make it from all the technical crap I've read through).
 
After talking with multiple experienced exhaust fabricators, for most applications there isn't a lot you can do past the headers except reduce restriction. As you eluded, there are different types of performance from different types of headers, but as stated, the factory headers are pretty good for overall. 
 
How much does this matter in the reality of a road going car? SFA. If you like the sound and look, then you've done the best you could hope for.

Amen to that guys

I was never asking whether changing to stainless would improve performance of course it wouldn't it's just a different metal

Yes the stock headers are great design but they can be improved on the argument is now $$ vs performance

There has been some noticeably gains in Na from going to a bigger ID and less restrictive muffler even dyno proven results
Even my 600$ hi flo cat and 2.5 inch cat back had results even I noticed in terms of noise and performance

Each to there own aswell

In terms of exhaust and back pressure in the book mr2 performance by terry heick
It's quoted "I want the least amount of back pressure as possible Na or aspirated I'm more concerned with diameters and bends having it as straight as possible"

:) thanks