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Old 03-18-2016, 01:46 PM   #1
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Default Need Fuel Management Info on NB

Im planning on putting a td04 turbo in my 1999 Miata and running about 8pounds of boost. As far as intercooling and turbo plumbing and set up goes I have all that figured out, but my major issue is fuel management. I thought I would just put in a high pressure pump and a regulator in but then I found out the 99+ is a returnless system.... What do I need to do to make sure that my car runs rich enough after boost? I'm fairly new to mods and fuel systems so make it somewhat simple please.
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Old 03-18-2016, 01:56 PM   #2
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Megasquirt.
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Old 03-18-2016, 02:10 PM   #3
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I highly doubt you have anything, at all, "figured out".
You need to learn how to properly turbocharge a car, and how it all works.
Please do so before you ruin a Miata.
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Old 03-18-2016, 02:19 PM   #4
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I highly doubt you have anything, at all, "figured out".
You need to learn how to properly turbocharge a car, and how it all works.
Please do so before you ruin a Miata.
Why do you think I'm asking for help then, hotshot? If I knew how to properly turbocharge a car I wouldn't be on the forum. This is a place for DIY help and support. Obviously I need help, and everyone has to start somewhere. Your negativity really isn't helping me now is it?
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Old 03-18-2016, 02:21 PM   #5
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Old 03-18-2016, 02:35 PM   #6
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Anyway I'm not really looking for just info on an ecu system. I was planning on doing just a simple chip and tune but if worse comes to worse and I have to get a whole ecu I would go with megasquirt but you know... College and project car money don't really go hand in hand. So I'm looking for information on like regulators and injectors and whatnot. I'm going to put in a Walbro Fuel Pump 190LPH-HP but the returnless system has me stumped on regulators. I was going to do a rising rate begi one but I can't because the pressure is MAP independent
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Old 03-18-2016, 02:41 PM   #7
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There are no simple chips to tune. There are no regulators that work well. MS is the cheapest and easiest route to go.
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Old 03-18-2016, 02:45 PM   #8
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There are no simple chips to tune. There are no regulators that work well. MS is the cheapest and easiest route to go.
So you're telling me that with the walbro pump, bigger injectors, and a megasquirt with a proper tune I'm good?
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Old 03-18-2016, 02:48 PM   #9
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You don't even need the bigger fuel pump. Stock is usually good somewhere in the 200-240whp range.

FlowForce EV14 injectors from TrackSpeed Engineering are the injectors you want.

A MS3X of some variant is what you as an ecu. You can get one from Braineack in the for sale section, or from MSLabs through Trackspeed engineering, or from DIYAutoTune.
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Old 03-18-2016, 02:50 PM   #10
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The ECU is going to be your golden goose of your entire build. Everything else will be moot if you go about things *** backwards like a mr2 in the rain.

You don't want to 'chip anything, BELIEVE ME.

If you don't want to do anything but just want some boost, a FM kit with a voodoo box is your best bet. Shiuend may have to confirm if that bandaid would work.

If I were you, I'd pickup a MKTurbo setup and go from there. Some sort of ev14 injectors that will work with the ecu you choose.
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Old 03-18-2016, 02:53 PM   #11
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we don't chip our cars.
it's not 1985.

well, begi still does. but they are still living in 1985

we're not gonna spoon feed you here. the expectation is that you'll use the forums search function to learn the basics. if you don't, you're gonna have a bad time.

welcome to the thunderdome
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Old 03-18-2016, 02:54 PM   #12
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Would an MSPNP2 work? Thank you for info on the injectors and pump. That actually saves me a lot of research. I have a td04 with boost controller, bov, all necessary plumbing along with a 28x7x2.5 intercooler. We're doing custom exhaust (including manifold). Just some background for you guys. And before you ask, the fab work for exhaust and all that won't be done by me. It will be a professional hookup I have.
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Old 03-18-2016, 02:56 PM   #13
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yep, mspnp2 should work no prob. it will also need a wideband and gm iat
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Old 03-18-2016, 03:06 PM   #14
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yep, mspnp2 should work no prob. it will also need a wideband and gm iat
I have the wideband already but for the air temp would this one work?

https://www.diyautotune.com/product/gm-open-element-iat-sensor-with-pigtail/
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Old 03-18-2016, 03:09 PM   #15
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yup that's the one
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Old 03-18-2016, 03:16 PM   #16
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Originally Posted by MADMX5 View Post
I have the wideband already but for the air temp would this one work?
Be sure to put it in the coldside end tank of the intercooler for 99.99999% less fail and heatsoak.
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Old 03-18-2016, 03:16 PM   #17
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Alright I think I got everything I need. All in all I'll have those EV14 injectors, mspnp2, IAT sensor, wideband O2 with gauge, boost gauge, boost controller, bov, td04, intercooler, stage 1 ACT clutch, custom exhaust and all that, and probably another oil pressure gauge to make a solid 3 in my console. Sound good or am I missing anything?
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Old 03-18-2016, 04:07 PM   #18
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Oil lines, possibly water lines if the turbo is water cooled, but that's all I can think of. Every megasquirt I've bought has come with a GM IAT sensor, so you can probably hold off on buying that since it'll most likely come with one.
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Old 03-18-2016, 04:21 PM   #19
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nope. we just bought mspnp2 from diy for another buddy of mine doesn't come with one

I'm sure you can add it to your order tho
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Old 03-18-2016, 04:29 PM   #20
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You left out tapping your bung hole. You are definitely going to need to research that. If you tap it wrong you will be very upset.
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