DW300 Question
 

I plan on running e85 in my turbo build in a nb1(2000), i found a pretty good deal on a dw300 new, but it was bought for a '93 miata says DW300 141015, doing some searching i was not able to determine if it was interchangable.

What's the question?

oh boy

From my understanding it is a kit, would the 93 assembly "kit", be able to be used on a 2000?, my initial thought is no. I understand that the actual pump is universal.

Only other difference is the sock

My guess is the sock is necissary? any way to modify it to fit the 94-05 fuel tank?

Yeah, put a 2000 sock on it.

Thanks, I think I should be good to buy it. Just saw they sell the kit individually.

https://www.vividracing.com/deatschw...151330785.html

The electrical connector is different, if I remember right aftermarket pumps are plug and play on the 1.6's, but not on NB's. Even if you get that install kit for the electrical connector, use the stock NB sock instead of the Douchewerks sock.

In the kit i linked, it appears there is some sort of electrical connector? Can anyone confirm that it will work with nb1 FP harness? Never had to dissasmble one yet :x:

I don't think that pump will play nice with a stock fuel pressure regulator.

Well the nb1 we had burnt down, my Na8 '94 will have a fuel system upgrade. I plan on running an aeromotive knockoff, but use quality fittings from Pegasus racing since they are down the road! @ SpartanSV thanks for pointing that out, saved me a headache.

burnt down?

oh I'm glad you're using quality fittings on your china knockoff junk pump, that makes everything better

From what i could tell, i wasn't in the vehicle. It was doing some pulls to get rid of the 87 in the tank to add 93, a little smoke puffed out of the hood then then when depressing the clutch it just dropped to the floor when pulling over, then a small fire broke out. Didn't have a fire extinguisher in the car, rookie mistake thus burned down. Bought the car for $500 with a Carbon Fiber hood, ISR catback, t25 china charger, ebay coils, the body was rotted. We parted out the car 2 weeks ago. Motor was still good.

Any recommendations where to get a relatively inexpensive FPR?

https://cimg7.ibsrv.net/gimg/www.mia...06dfb35631.jpgThe MS2 PNP is still good, first thing we pulled out. Bench tested it, after drying it out, all the magic smoke stayed in.
https://cimg9.ibsrv.net/gimg/www.mia...26e734804c.jpg

Of the few things to skimp on with a turbo build, fuel probably shouldn't be an area to cut corners. You're talking about sub $200 parts. If you want cheaper than that, just grab any returnless China FPR.

What's wrong with stock?

.

https://www.miataturbo.net/diy-turbo...-300-hp-96009/

https://www.miataturbo.net/engine-pe...gulator-66869/

As far as i understand the stock FPR, even on my '94, Won't exactly work with the DW300?

Aeromotive, AEM, Fuelab, Radium, whatever. It's a fuel pressure regulator. Get a name brand one that has the features you want. Count on spending $180-$300.

I forgot you where trying to run e85. Just going to say, stock for carried me to 350whp on pump with a walbro 190lph.

Get the DW fuel pump hardwire kit also. I melted quite a few stock fuel pump relays before I figured out I needed to get the hardwire kit to support the DW300. Somewhere out there I made a thread about it and ended up posting an idiot-proof install diagram, you should be able to search and find it. The pump has been awesome for me after my Walbro 255 couldn't keep up, but I definitely wouldn't consider just dropping it in with stock wiring again.

Saved the OP a search. I just happen to be doing the same thing myself this evening. https://www.miataturbo.net/general-m...p-relay-95629/

Thanks for the info, I would have learned the hard way otherwise. Here's the amazon link, which hopefully won't change. Any particular reason why the relay might fail? Drawing more current than the relay was designed for?

Pic shows a 30 amp continuous relay with a 30 amp fuse. Tech sheet for that pump says 12 amp draw at 40psi. Should be fine.

Some people don't like the spade style connectors on those relays, but many oems use the same style.

Here is how I wired my Deatschwerks fuel pump relay. This eliminates the factory relay and allows the ECU to still control the fuel pump though. Wiring colors are from a 95 model.

https://images2.imgbox.com/df/79/xllufLme_o.jpg

As an update. Fuel system is all complete per a month ago, that wiring diagram helped a lot thanks again. I used the China FPR with a genuine Aeromotive gasket, no leaks so far. The china fittings are garbage, if anyone plans on using them don't.