I am personally familiar with the noise difference and read several threads about the electrical issues before making my decision, but your personal results may vary. You may have never seen an issue and that is just fine. I sold a Walbro and went to a DW and won't go back.

It's probably also worth pointing out that a lot of the 'bargain' Warlbro pumps are cheap fakes - so if you do go that route make sure you buy from someone reputable...

It's worth noting that "my" results aren't just from my own car, but rather a summary of my experience of tuning hundreds of customer's Miatas over 10 years - and trust me, if there was ever a single on any of the cars I've tuned, customers would give me a call first rather than their mechanic/shop. I never recommended any other pump other than a Walbro, and exactly 0 of any car I tuned over these last 10 years had a single issue.

The noise, that's a different issue altogether and I have no experience with the DW pumps as far as noise is concerned.

I had a single customer with an AEM 320(?) pump and he did melt his wires.

DW pumps are in kits. So hopefully you can answer this about them.
Does the kit form a drop in replacement or is there modification necessary?

They are made to fit in the factory pump hanger.

Deatschwerks Fuel Pumps (DW100/200/300)

There's a section on fitment on there..

I went with a DW200 - with no options for E85 in the UK, the extra hassle of the DW300 is probably overkill for what I can realistically achieve power wise... I also hardwired it while it was all apart...

Excellent.
By hassle do you mean the needed FPR change? I see that as more sensible because its a serious pump so you should be doing that anyway.

I picked it up from Trackspeed when I was over in the US on a work trip, had a chat with Andrew/Savington and we came to the conclusion that the DW200 would be good for what I wanted, wouldn't require a regulator change and is an easier fitment as it drops straight in where the larger one requires a bit of fab work.

Edit : fitment is the same, the DW400 is the one that requires extra work.

What is what you wanted by the way?
There isn't any horsepower ranges on TS (which i would trust more than manufacturer estimates) so i wonder if the DW200 can hit my heart transplant goal (which i hope i won't need for a while).
Oh that isn't stated on the site. What was the fab work? Did Andrew detail it?

Initial goal is somewhere round the 300rwhp mark, on standard fuel - the DW200 should be able to cope with that with no problems.

Actually - searching it's the DW400 that requires the extra work as it's physically bigger. DW300 just needs the external FPR and uprated wiring, my mistake.

My big boy pants goal is 342rwhp (or triple my initial power) but that will be once Phoebe's heart goes anyway. So its looks like my goal is borderline realistically.
I'd prefer to tart up the fuel system anyway for safety so maybe its just better than way.

A grown up can probably comment as to if the DW200 is big enough for that, on normal fuel probably... But, if you are dropping the large amount of cash to aim for 342whp and everything supporting that it will entail, then a few extra quid for a fuel pump and regulator makes very little difference overall..

This is my thoughts also but if it isn't needed I'm happy.

On the buy it once front.
Can someone comment on a 1.6 with a EFR6258?
I know its a big boy turbo on a little lad engine so spool won't be as peaky as most of the sites say but has anyone actually tried it?

The text from TSE says it spools like a 2554 which was my planned turbo but getting an EFR now would save getting another turbo later.
Will it spin up say 750rpm slower (which is pretty copable) or is like 2000rpm?

I'd just like some data.

it spools more like a 2560, and ive had both.

it will be fine on a 1.6L. yes it will spool a tad slower, but its a fast spooling turbo by any measure, so it'll be just fine. my car gets real happy from 3200rpm or so, so a 1.6L will probably come alive closer to 4k rpm

That is better than i was expecting so perhaps that is a better option for my progress given the expense of an EFR.
Even my most wild dreams only go just above the supposed capacity of the 6258 so I'm happy to have a bit of lag until the 1.8 goes in and keep on the side of sanity for power.
After all that will make servicing intervals better.

If anyone else has experience or even better a log that would be great.

1st Post - I`ve been researching a drive in/out turbo conversion for my 1.6 91 NA, and I`ve chosen to book in with Mtech in the UK.
Given how this thread comes up prominently in search engines when looking up Mtech, I`ll be posting my experiences here to give others an idea of what they are like to deal with.
Car is booked in for for the TD04 Turbo conversion using the ME221 ECU, plus a new clutch and a sports cat. I`ve also asked them to configure launch control for me. I`ll be dropping the car down to them on Dec 31.

Cheers.