Tubular Turbo Manifold - Firing Order Matter?

Hey all, first post here.

I'm currently piecing together a tubular turbo manifold, I've picked up all the necessary bits.

It's for a turbo MX5 drift car, it's been turbo for a few years now running a Subaru TD04.

When looking at typical tubular manifolds on offer for sale, some seem to keep the runners in order of the firing order 1-3-4-2, others don't.

Now the only benefit to not having the runners match the firing order is it appears to be a bit easier and neater for routing the piping.

My question is, how much does this matter?

Being a Subaru flange, there's no need to worry about divided flanges.

I intend to run this manifold with my current setup for a while to see how it holds up and eventually put a slightly larger turbo on and a power target around 300ish.

Any info with regards to this aspect of the design of turbo manifolds would be appreciated.

From what I can tell it doesn't seem to matter for a turbo engine. I think getting it in the place you want and the neatest package would be all that matters.

If you can keep a fabricated tubular manifold from cracking, you'll be ahead of the game. 

My understanding is that you want the smoothest, straightest run you can get. It's not like tuning a header where you can get a scavenging effect. 

Thanks guys, that puts my mind at ease, I have a design in mind which should be easier to make, more equal length and allow me to keep the turbo a bit closer to the head.

I'll report back once it's cracked asking for advice haha.

The issue is that, even though you can tune an exhaust to work with pulse timing, it can sometimes be at the detriment of the turbo performance which you'd notice far more. If you have to give up a little NA baseline for better turbo response, efficiency, etc, it may be better overall. The holy grail is to achieve both ( a la F1), but that level of engineering and optimization is rarely possible outside of a massive pro organization with narrowly defined operating parameters. 

If you're sticking with relatively small turbos while there is a right and wrong it doesn't seem to make a meaningful change. 

If you're trying to get a 1.6l engine to spool a 6266 or something dumb it works surprisingly like a traditional header 

Dinky turbine housings are akin to bolting a 2" Pep-Boys Turbo or similarly restrictive muffler to the back of your sexy header.  The ability of the turbine housing to move exhaust should be your determining factor in how much effort you put into your manifold.